Koh Phangan history and legends: kings, temples and sea stories

Koh Phangan, most explanations agree, is named after something you can only walk on at low tide. The account repeated by the Sirindhorn Anthropology Centre’s community archive and by Thai travel writers derives the name from lang ngan, a southern Thai dialect word for a ridge of sand that rises out of the sea when the water drops; the short a vowel, the story goes, was added later [1]⁠[2]. The anthropologists present it as a presumption rather than a finding, and no linguistic study has settled it.

A Thai government research report offers a variant reading: pha, to meet, and ngan, a sandbar seen at low tide [3]. The Tourism Authority of Thailand records a different line altogether. A former Ko Samui district chief, it says, remembered the island as Ko Raham, “the shadowy island”, which TAT takes as a hint of early Malay settlers [4].

The written record is firmer about spelling than about meaning. The 1970 Interior Ministry announcement that made the island a minor district writes เกาะพงัน, without the vowel; the 1977 royal decree that made it a full district writes เกาะพะงัน, the form used ever since [5]⁠[6]. The older spelling never quite disappeared: a 2009 Manager Online feature still uses it [7].

If you want to see the idea rather than read about it, go to Mae Haad (Mae Hat) on the northwest coast at low tide. Thai Wikipedia notes that a sandbar surfaces there and lets people walk across to Koh Ma [8]. No source ties the island’s name to this particular sandbar, but it is the clearest picture on the island of what lang ngan describes.

For most of the 19th century Phangan looked west, to the mainland. According to the 2011 Department of Cultural Promotion report, the clear historical record begins under King Mongkut (Rama IV, 1851 to 1868), when Samui was placed under Nakhon Si Thammarat and Phangan under Chaiya [1]. The island’s seat was not at Thong Sala but at Ban Wok Tum on the west coast, then the most prosperous place on the island, because its bay suited sailing ships and lay close to Phumriang bay, the main crossing to Chaiya. The last governor, Luang Samut Khiri, was sent over by the governor of Chaiya.

The best snapshot of that island dates from 1884, when Prince Bhanurangsi inspected the southern provinces for King Chulalongkorn. His account, quoted in the same report from a 1961 edition, describes about 300 Thai and Chinese households, coconut groves fenced along the shore, and streams where gold and tin had once been found in the gravel [1]. The islanders fell into two tribute groups, both paying in money: those under the tin levy paid 7 baht 2 salueng a year, those under the birds’ nest levy 5 baht 2 salueng. The prince’s verdict was a gentle one: the islanders considered themselves happy; after their tribute and the occasional call for labour, they were not in hardship.

A Chinese strand runs through all of it. The report says Chinese migrants mined gold under Rama IV until it ran out, then panned tin from the stream gravels under Rama V; swiftlet nests were gathered on Koh Tae Nok and a scatter of smaller islets, and some Hainanese sailed junks trading mature coconuts and coconut oil [1]. The Sirindhorn Anthropology Centre’s community archive adds that the first Chinese on the island are said to have come to plant and gather coconuts [2].

In 1897 a local government reform abolished the town of Phangan and folded it into Ko Samui district under Chaiya, leaving two subdistricts, Koh Phangan and Ban Tai [1]. Wok Tum was a seat of government no longer. Tin mining, the report notes, has long since ended.

The name says it plainly: Than Sadet means, roughly, the stream the king went to. Thai community records give King Chulalongkorn’s (Rama V) first visit to Koh Phangan as B.E. 2431, which English Wikipedia renders as 1888 [1]⁠[2]. A 2009 Manager Online feature dates his visits to Than Sadet from B.E. 2432 to 2452, 1889 to 1909 [3]. Before 1941 the Thai year began in April, so the gap may be smaller than it looks; until someone reads the dates carved on the rocks, 1888 or 1889 is the honest answer.

On the number of visits the Thai sources agree: 14 [1]⁠[4]⁠[5]. Manager Online retells how the naming happened. The king’s map showed only fresh water at the spot; when he found a large stream instead, he enjoyed it so much that he gave it a name and had the year carved on the rock ledge at each visit [3]. The royal travel record behind that account has not been located, so read it as the story Thai writers tell.

The same feature credits him with two more names: Than Praphat, a small fall into the sea, named on a tour of Ban Don Bay in 1889, and Than Prawet, named in 1898 [3]. All three use royal vocabulary for a king’s journey.

He was not the last. The Ministry of Culture report and the Tourism Authority of Thailand list four Chakri kings at Than Sadet: Rama V, VI, VII and IX [4]⁠[5]. A local writer dates the later visits to 1911, to 1926 and 1928, and to 1962 [6]. Royal monograms, จปร for Rama V among them, are carved on boulders near the falls together with numerals and lettering, and Manager Online counts about ten inscription sites [3]⁠[7]. At Than Praphat the lettering at the fall has worn away, while a monogram dated Rattanakosin year 108 survives about a kilometre upstream [3].

Islanders regard the waterfall as sacred because of that royal history [1]⁠[3]. The rule for visitors follows: do not carve, write on, climb or damage the inscribed rocks [8].

Read an English guide and Wat Phu Khao Noi is the oldest temple on Koh Phangan, founded around 1400 by the first monks to settle the island [1]⁠[2]. Read Thai Wikipedia and the date moves forward by almost five centuries. Citing a local website, it gives the founding as B.E. 2432, 1889, by Luang Pho Phet Wachiro, an island-born monk, also known by his title Phra Khru Wibun Thammasan, who served as head monk of Ko Samui district when Phangan was one of its subdistricts [3]. No primary or academic source for the 1400 date has been found. A shrine on the hill could be older than the monastery; nothing published shows it.

The hilltop chedi is said to enshrine relics of the Buddha [4]. The Ministry of Culture’s cultural database describes something less like the postcard stupa visitors expect: a tall reliquary chamber with false doors on four sides, set on a three-tiered base and crowned by a small bell and a five-ringed spire, ringed by six large and four small directional chedis that it believes are new construction [5]. Modern ceramic ware is set into the base, which English guides describe as upside-down bowls in the walls [5]⁠[1]. The database says the chedis are registered by the Fine Arts Department; the year 1997, repeated online, comes from a travel guide alone [5]⁠[1].

A further story, found on a property blog, says monks hid a precious relic here and that it has never been found [6]. No Thai source tells it, so treat it as an online story, not a local tradition.

The founder has fared better than the dates. Both versions of the district motto that we found name him, and the longer one opens with Rama V and Than Sadet, then Luang Pho Phet, the centre of hearts [7]⁠[8]. This is a working temple: cover shoulders and knees, take off your shoes before entering its buildings, and never touch or point at a Buddha image [9].

In 1929 a king made a home movie on Phangan, and it became part of the national film canon. Waen Wiset, The Magic Ring, was shot on the island while King Prajadhipok (Rama VII) was travelling in the Gulf of Thailand. According to Pajaree Tachart, writing for Chulalongkorn University’s Arc of Memory project, he wrote the script and the intertitles of this silent film, set to a Thai classical score, and directed, edited and produced it himself [1].

The story is a fairy tale. A cruel stepfather abandons his children on the island; one of them meets a nymph who gives him a ring that grants wishes, and the children turn its magic against their stepfather [2]⁠[1]. “All the actors are the royal family and King Rama VII shot the film himself,” Chalida Uabumrungjit, deputy director of the Thai Film Archive, said when the 25-minute short was added to the national registry [2]. The film is credited to a pseudonym, Nai Noi Sorasak [3].

Where exactly the camera stood is told locally. A Than Sadet writer says the film was shot at Than Sadet bay and around the waterfall, and wonders whether the year should be 1928, the date of the king’s second inscription by the stream [4]. The Film Archive’s list and the Chulalongkorn study both give 1929 [3]⁠[1].

In 2013 the Film Archive named Waen Wiset national film heritage [3]. Than Sadet is visited today for its pools and its royal inscriptions (see The king’s stream); the bay at the mouth of the same stream is where the local account places a king’s film set.

Once a year, at the end of the rains, Phangan pulls the Buddha across the sea. In Chak Phra, literally “pulling the Buddha”, an image of the Buddha rides in a decorated boat that is towed in procession through the bay. When the custom began on the island is not known. Villagers interviewed for a 2015 study by Pankaew and Boonsuaykwan remembered it already running around 1932, at three temples in three bays: Wat Pho at Hua Thian pier in Ban Tai, Wat Amphawan at Wok Tum and Wat Rat Charoen at Thong Sala [1].

What sets Phangan apart, the interviewees said, is who paddles. The Buddha boat is towed by slender ruea mat boats seating six to eight, paddled by women, with a steersman who may be a man. Each crew wears one colour and changes it every day of the three-day festival; only the woman at the bow dresses differently. The men paddle their own boats outside the procession, throw seaweed at the women’s boats and trade courting boat songs with them, some written in advance and some made up on the spot. A man who can improvise is called mut to. Seaweed was the ammunition because it drifts into the bays in the eleventh lunar month, and a man could throw it only if he could sing. Touching the women’s boats or bodies was forbidden, and anyone who went too far could be struck with a paddle without blame [1].

The festival has nearly died more than once. Around 1949 the abbot of Wat Rat Charoen moved it from the first to the eighth day of the waning moon, perhaps because daytime tides were too low on the first day, or because that day was also the end of Buddhist Lent. It was revived at Ban Tai around 1963 and at Thong Sala from 1967; from 1984 the district chief paid for boat repairs and prizes, from 1987 Thong Sala has been the only host, and local government has funded it since 1995 [1].

The day is unsettled in print. The Sirindhorn Anthropology Centre’s archive gives the first day of the waning moon [2], the 2015 study the eighth. Check the local programme before you plan around it.

Thong Sala’s harbour once had a floating neighbourhood. In a 2024 study in the Journal of Liberal Arts of Thammasat University, Tawirat Songmuang traced the Tanka, the Chinese boat people, and found that most of those in Surat Thani came from Hainan and settled on Koh Phangan [1]. In the mid-20th century at least ten Tanka households, about 80 people, lived almost their whole lives on junks. A Hainanese man born in 1932 remembered more than ten boats moored in a row in front of Thong Sala’s Chinese community. The families later moved ashore and merged with the Hainanese community; only three households at Thong Sala market still identify openly as Tanka [1]. The author describes his paper as the first study to identify Tanka people in Southeast Asia.

One family explained their arrival with a broken mast. The grandfather, the father and an adoptive mother had sailed by junk from Hainan to Samut Prakan to fish, then worked the waters around Phangan; when the mast snapped near Chaloklum bay they could go no further and brought the boat in to Thong Sala [1].

Their faith travelled with them. Phangan’s Tanka revere Guan Yu, the protector of the Wan Kao shrine in Thong Sala. Fishermen asked him through a spirit medium which way the pomfret were running, and some gave up fishing and moved ashore on his advice. At Chinese New Year, boats at sea came back to Phangan to make offerings at the shrine [1]. The study also records offerings to Mae Ya Nang, the spirit of a boat’s bow, by a Tanka fisherman from Samui; Thai fishermen hold the same belief [1]⁠[2].

Older Chinese writing gives the Tanka a strange ancestor, the Luting, half fish and half human. The study retells the myth from Chinese and Hong Kong literature and notes that other Chinese groups passed it on as a way of marking the Tanka as outsiders of lower status [1]. It is not a story the Phangan families were recorded telling about themselves.

The study prints a founding year for the Wan Kao shrine that looks like a typing error, so we leave it out until the shrine itself can confirm it.

The first islanders the record names were fishing people. The 2011 Department of Cultural Promotion report lists early migrants from Samui, Chaiya, Tha Sala, Don Sak, Pak Phanang, Nakhon Si Thammarat and Pattani, drawn by bays where fishing boats could anchor; inshore fishing, it says, was the islanders’ first trade [1].

Chaloklum is where that life is easiest to see. The Sirindhorn Anthropology Centre’s community archive calls it the largest fishing community on Koh Phangan, set in a bay that hills shelter from the wind [2]. A Thai tourism listing links the name, โฉลกหลำ, to that shape: a deep, curving bay enclosed by mountains [3]. What the word means literally is not documented. A local magazine’s suggestion that it comes from a Malay form, Loh-da-lam, is labelled a presumption by the report that quotes it [1]. The Tourism Authority of Thailand still introduces the village through the life of its coconut farmers and fishermen [4].

The bay matters to the island’s other stories too. When a Tanka family’s junk lost its mast off Chaloklum, the accident decided where they would settle (see The boat people of Thong Sala).

The economy those families built held until the 1980s. The same report describes the turn: government tourism promotion from 1982 and large car ferries from 1985 changed an island of coconut groves and small-scale fishing into a modern community [1] (see Ferries, bungalows and a district).

The sea keeps its own customs. Thai fishermen traditionally believe that each boat houses Mae Ya Nang, a female spirit who lives in the bow, and pay her respect before they go out [5]. That belief is recorded for Thailand as a whole, not for Chaloklum in particular, so we give it as national custom rather than village record.

Haad Salad (Hat Salat) has the most quotable folk etymology on the island. The Sirindhorn Anthropology Centre’s community archive records it as a legend: a band of pirates once moored and hid their boats here, and that became the origin of the beach’s name [1]. A Thai tourism listing supplies the motive. The cove, it says, gave the pirates a hiding place while they lay in wait for trading vessels crossing the Gulf of Thailand [2]. Thai Wikipedia repeats, without a source, that the beach was once a pirates’ hideout [3].

The language is what makes the story stick. The Thai word for pirate is chon salat, โจรสลัด, and the beach is หาดสลัด, Hat Salat. The English spelling, Salad, is simply a transcription of that second word; it has nothing to do with lettuce. The shared word is all the evidence there is. No historical record of pirates using this cove has been found. The archive and the tourism listing call the story a legend; only Thai Wikipedia states it as fact, and it cites nothing.

Read it, then, as the story the beach tells about itself: a name that has outlived any written account of how it was earned.

Bottle Beach is a translation. Its Thai name, Hat Khuat, means exactly that, and the explanation most often repeated comes from English Wikipedia. Its article cites a Rough Guide for the beach but gives no source for the naming; it says the beach was named for its protected cove, whose shape, seen from the rocks, resembles a bottle [1]. Wikivoyage tells it differently: the long hike to the beach, it says, gave the place its name, because plastic bottles were used to mark the trail [2]. No older or Thai-language source for either explanation was found, so treat both as guidebook tellings rather than a recorded event.

The cove is also one of the most isolated on the island. Wikivoyage describes it as reachable by long-tail boat from Chaloklum or by a long, tough hike, with a poor road as the third option [2].

Bottle Beach is lucky to have a story at all. Many of Phangan’s place names arrive with none. Hin Kong on the west coast is mapped in Thai as บ้านหินกอง, literally “pile of stones”, yet nothing we found explains which stones [3]. For Haad Rin (Hat Rin), Mae Haad and Thong Nai Pan we found no documented origin either. Where a story does exist, as at Haad Salad, it is usually a legend. Where none exists, we leave the gap open rather than fill it.

In the space of twenty years Phangan stopped being a corner of Ko Samui district and became a destination. The paperwork came first. An Interior Ministry announcement dated 11 September 1970 made it a minor district from 1 October, with two subdistricts, Koh Phangan and Ban Tai; the document still spells the island without its short a vowel [1]. The 2011 Ministry of Culture report gives 23 October 1970 for the step to minor district; we follow the Gazette announcement, which sets 1 October [5]. A royal decree signed on 31 March 1977 and published on 12 April made it a full district from the following day; the same decree raised ten other minor districts across Thailand, on the shared grounds that they had grown more prosperous than before [2]. In 1982 Koh Tao became a subdistrict of the new district [4]⁠[3].

Transport followed. For decades overnight passenger boats from Ban Don, the town now called Surat Thani, carried the island’s goods. The 2011 Ministry of Culture report dates government tourism promotion from 1982 and large car ferries from 1985; the ferries could bring cars, tractors, trucks, buses and building materials, and with them came hotels and resorts [5].

Haad Rin, at the southern tip, became popular with backpackers in the 1980s [6]. One visitor’s memoir of the winter of 1988 to 1989 describes about half a dozen bungalow resorts there, no concrete roads, access only by long-tail boat and not a single motorbike on the beach; the only engine noise came from the generators of some resorts and from the boats. The island’s only telephone stood by the old post office in Thong Sala, and three minutes to Europe cost about 20 US dollars [7]. A Scottish expat interviewed in 2013 dated mains electricity on the islands to “about March of 1989” [8]. No official date has been found.

Those are single memories, and we label them as such. Put beside the gazettes, they show how quickly it happened. In 1977 a decree counted Phangan among districts more prosperous than before; in 1987 there was still no pier, and passengers climbed from the express boat into a long-tail and waded ashore through knee-high water [9].

Wat Khao Tham, the Mountain Cave Monastery above Ban Tai, owes its shape to a woman. In 2009 the monastery’s website described Mae Chee Ahmon, then 86 and a nun for 51 years, as its guiding force, a woman “who ignored all the conventions of her time, to develop a small monastery on a rocky hill with magnificent views of Koh Samui Island and the sea” [1]. The site was frank about the cost. A monk, it noted, usually has no problem getting Thai support for such a venture; a nun had less, and she was blamed for starting something so unconventional [1].

In 1987 two Western meditators, Rosemary and Steve Weissman, arrived with a letter from the abbot of the monastery where they had been staying. Mae Chee Ahmon had been writing to him, asking him to send experienced Western meditators who spoke English to teach the travellers who were turning up at her centre. They planned to stay three weeks [1]. They became the resident teachers from 1988 [2] and, according to their own teacher profile, led their last retreat in March 2013 before returning to Australia [3]. By 2009, the monastery said, more than 7,000 people from over 70 countries had completed retreats there [1].

One English blog says the temple was “built in the year 1894” [4]. Nothing in the monastery’s own account supports that date, and no other source we found does either. If there was a hermitage on the hill before her, it has left no record.

This is a working monastery. Dress to cover shoulders and knees, go barefoot inside temple buildings, and step over the raised threshold rather than on it [5].

“Everyone claims they did the first Full Moon Party,” a Scottish expat told Chiang Mai CityLife in 2013 [1]. The sources bear him out. They agree on the place, Haad Rin at the southern tip of the island, which backpackers had begun to discover in the 1980s [2], and on the venue most often named, Paradise Bungalows. They disagree on the year.

The version with names attached comes from a 2011 Ministry of Culture study. Bungalow owners, it says, threw farewell seafood barbecues for departing guests on full moon nights, when the moonlight lit the beach. The ones who started it were Sutthi Kuekamon and Phiphit Ratrak, owners of Paradise Bungalow, who held such a farewell for travellers from Australia in 1987; bungalow owners and local officials then made it a monthly event [3]. The study’s source for this is a 2008 study by a Phiphit Ratrak; if he is the same man as the host, this is a founder’s own account.

Others count earlier or later. Paradise Bungalows has claimed 1983, Chiang Mai CityLife noted in 2013, although some disputed when Paradise actually opened; Bangkok Post gave the same year in 2014 [1]⁠[4]. English Wikipedia’s introduction says 1985 [5]. An islander, Sutti Kursakul, told AFP in 2016 that he held the first party around 1988 as a farewell to an Australian friend, and TIME’s 2013 account, built on a Scottish witness, also starts in 1988 [6]⁠[7].

There was competition from the start. Bangkok Post interviewed Soon Somwang, who was 18 in 1986, when her brother Wisaim and an Englishman known as Mooney held their own full moon party at a restaurant on Haad Rin Nai. She remembered a small party of about 300 locals and guests, with no body paint and no fire. Those parties ran until the early 1990s [4].

The scale changed fast. By 2013 Bangkok Post reported up to 30,000 people on Haad Rin Nok on a party night [8]. The party was suspended in 2020 because of Covid-19 and returned at full scale on 16 April 2022 [5]⁠[9]⁠[10].

For the nights of the 2027 parties and how their dates are set, see our Full Moon Party 2027 dates.

Chao Mae Kuan Im, the Chinese goddess of mercy known elsewhere as Guan Yin, has a shrine on the road from Thong Sala to Chaloklum, and its origin story is a dream. As the Thai Holiday Guide tells it, a local woman, Khun Malawan, dreamed that Kuan Im asked her to help build a lighthouse to guide the island’s fishermen safely home at night [1]. Word spread and islanders gave money. Partway through, the plan changed from a practical lighthouse to a shrine honouring the goddess, which was finished in 1992 [1].

Another English site says the building was originally used as a lighthouse and as a guide for fishermen [2]. The two accounts disagree on whether a lighthouse ever stood here or was only planned, and we found no Thai-language source to settle it. Either way, the story ties the shrine to the sea and to the boats that came home in the dark.

Thai-Chinese families from around the island come by regularly, above all around Chinese New Year and the Vegetarian Festival [1]; the island has had Chinese residents since the 19th century (see When Wok Tum was the capital). There is no fixed schedule of ceremonies and no guided information on site, and the same guide suggests early morning as the quiet time to visit. Dress modestly and take your shoes off before you step into the prayer hall [1].

The forest at the heart of Phangan owes its protection to a monk. Phra Khru Suphattharathammaphirom (Luang Ta Lop), abbot of Wat Rat Charoen in Thong Sala, set out to protect the woods around Phaeng waterfall. The national park department’s own page, archived in 2007, says that in 1967 he founded the Karunamet Nam Tok Phaeng forest park and had a one-kilometre road cut to the falls, and that in 1977 he handed it to the Royal Forest Department to be declared a forest park [1]. The EcoThailand Foundation dates his survey to April 1968, the dirt road to 1972 and the official forest park, with nine paid workers, to October 1977 [2]. The Ministry of Culture report draws on his own notes [3]. Known as Luang Ta Lop, the same abbot revived the sea Chak Phra in Thong Sala bay in 1967 [4].

Then the record goes quiet. Surveys for a national park began in 1989, and in 2013 a local writer noted that it had still not been declared [1]⁠[5]. Many websites nonetheless say the park was established on 31 December 1983 and enlarged on 10 February 1999. Those dates entered Wikipedia in July 2007 from a misread official page: the first is the publication of a regulation creating a national reserved forest, the second a committee’s approval of a park proposal [6]⁠[1].

The forest was tested in 2015. From about 2012 the founder of Kan Air had been building an airport with a 1,100-metre runway on about 100 rai of former coconut land in the hills [7]⁠[10]. In 2015, after a complaint, provincial authorities suspended construction, and in September forestry officials found that land prepared for it on a mountain at Thong Nai Pan had encroached on about 20 rai of park land, in a park not yet formally declared [8]. A 2014 environmental protection zone had banned new commercial airports on the islands, though its rules were not retroactive [9]. The airport was never finished [10].

The legal birth came on 18 November 2018, when a royal decree making the forest of Koh Phangan and Ko Kong Than Sadet a national park was signed; published four days later, it covers about 43 square kilometres [11]⁠[12]. TAT counts it as Thailand’s 132nd national park [13].

Khao Ra is the roof of Koh Phangan, though the roof’s height depends on who measured it. The national park’s own page, as archived in 2007, and OpenStreetMap both give 627 metres; English Wikipedia, citing a later park page that is now offline, gives 635 [6]⁠[1]⁠[2]. Call it about 630. The Tourism Authority of Thailand treats the climb as an expedition: every visitor must go with staff and bring medicine, food, water, a sleeping bag and proper clothes [3].

The forests on its slopes held more than anyone had listed. Between February 2021 and September 2023 a team from Suranaree University of Technology, the Naja Project Ko Pha-ngan and the Thailand Natural History Museum surveyed the island’s mammals with camera traps, night walks along transects, mist nets, live traps and drift fences. They recorded 28 species, 11 of them bats, where the national park’s species list had named a mere eight [4]. Among them were two critically endangered Sunda pangolins, both in national park forest, and 32 Sunda slow lorises, a globally endangered primate seen across the island on night surveys. Dusky leaf monkeys live here too, but the survey has a single record, an animal seen by a resident at the forest edge; no camera trap ever caught one [4].

Sambar deer appeared on the camera traps twelve times, mostly in national park forest [4]. This is where the record meets a story. A 2009 travel feature in Manager Online says the island’s deer are a royal gift: King Chulalongkorn released one male and one female on a visit to Than Sadet [5]. A 2011 research report for the Ministry of Culture repeats that the king gave deer to the park [7]. Neither cites a record of the release, none has been found, and nothing shows that today’s sambar descend from a royal pair. The deer are documented; the gift is told.

Until this survey was published in 2025, the national park’s list of mammals was eight animals long. It now has a baseline of 28, gathered with traps, nets, cameras and night walks, against which any future change on the mountain can be measured.

West of Phangan lies Mu Ko Ang Thong, a marine national park of 42 islands covering about 102 square kilometres, established on 12 November 1980 [1]. The Tourism Authority of Thailand, rounding, speaks of around 40 small islands about 20 kilometres from Koh Samui [2]. In 2002 the archipelago was listed as a wetland of international importance under the Ramsar Convention, site number 1184 [3].

Its best-known sight is a lake that seems not to belong. On Ko Mae Ko an emerald saltwater lake, Thale Nai, sits inside the island and connects to the sea through underwater caves [4]⁠[5]. The park’s wildlife includes dusky leaf monkeys, long-tailed macaques, smooth-coated otters and oriental pied hornbills [4]. The dusky leaf monkey is on the park’s list; on Phangan a three-year survey recorded it only once (see Khao Ra and the hidden mammals).

Then there is the novel. Alex Garland’s The Beach, published in 1996, sends its backpacker from Bangkok by way of Koh Samui to a hidden beach on an island in the Gulf of Thailand, and CNN says the book is set in Ang Thong [6]⁠[5]. The 2000 film went elsewhere: it was shot at Maya Bay on Phi Phi, on the Andaman Sea [5]. Garland wrote the book while living in the Philippines, and The Globe and Mail says the northern tip of Palawan inspired it [6]⁠[7]. Set in Ang Thong, inspired by Palawan, filmed at Phi Phi: three places for one beach. Thai National Parks adds that some sequences were filmed in Ang Thong, but cites nothing for it [4], and we found no other source.

Day trips leave from Koh Samui and Koh Phangan [2]. The park usually closes from 1 November to 15 December, depending on the monsoon [4].