Things to do in Satun.

The reason most people end up in Satun, even if they never learn which province they are in. Ko Lipe is a small island on the southern edge of the Adang–Rawi group, roughly fifty kilometres west of Ko Tarutao and close to the Malaysian maritime border, with white sand, clear water and a compact walkable centre with no cars on it. It was settled well over a century ago by Urak Lawoi sea people — one of the Chao Lay groups who have sailed the Andaman for at least three hundred years — and around nine hundred Urak Lawoi still live there, the only permanently inhabited island in an archipelago of some sixty. Ko Adang and Ko Rawi rise steeply behind it, largely undeveloped park land. High season runs roughly November to April; in the monsoon the boats thin out sharply.

The largest island in the province at 163 square kilometres, and the one with the history. Tarutao National Marine Park was declared on 19 April 1974 as Thailand's second marine national park, covering roughly 1,490 square kilometres and 51 islands; the island itself served as a political prison camp in the 1930s and 1940s, and the remains of the camps are still there. It is national park land with park accommodation rather than resorts — jungle, cliffs, mangrove and long empty beaches. It is also where the Cambrian trilobites were found that are the oldest recorded anywhere in the Thai-Malay Peninsula, which is a large part of why the province holds a Geopark designation at all.

Designated in 2018, the first UNESCO Global Geopark ever recognised in Thailand. It spans four districts and takes in two national parks and a wildlife sanctuary, with mountains and foothills to the east and north rising to 732 metres and islands and beaches on the Andaman side. The designation rests on one of the richest and oldest fossil successions in Southeast Asia — trilobites, brachiopods, stromatolites, conodonts, graptolites, tentaculites and nautiloids — and on the human side, on the living cultures of the Maniq and the Urak Lawoi. Practically, it means caves, karst, fossil sites and viewpoints scattered across the interior, best explored with a local guide who knows which are open.

Established on 27 October 1980 across 196 square kilometres, Thale Ban is a freshwater swamp and rainforest reserve pressed up against the Nakawan Range, running straight into Malaysia's Taman Negeri Perlis on the far side of the ridge. It is the inland counterweight to Satun's island reputation: a lake in a forest basin, hornbills, waterfalls, limestone and hiking. Forest covers 1,212 square kilometres of the province — 40.1 per cent — and this is the heart of it. The Wang Prachan border checkpoint, Wang Kelian on the Malaysian side, is in the same district.

Established on 31 December 1984 as Thailand's 49th national park and its 14th marine park, Mu Ko Phetra covers mostly intact coastline, open water and around thirty islands split between the southern part of Trang province and the northern part of Satun. It is quieter and far less visited than Tarutao, which is much of its appeal — Ko Bulon Le, reached from Pak Bara, is the best-known stop for anyone wanting an island with a beach and almost no infrastructure.

Not a sight in itself, but the hinge the whole province turns on: the speedboats and ferries to Ko Tarutao, Ko Bulon Le and Ko Lipe all leave from here, roughly sixty kilometres northwest of the provincial town, and the Mu Ko Phetra park headquarters is alongside. Worth knowing the other half of its story too — this is where a deep-seaport was planned for years and never built, in the face of sustained local opposition, which is why anyone selling land in La-ngu on the strength of a coming port is selling a story that has not happened.

A Sino-European mansion in the middle of the provincial town, built at the turn of the twentieth century as the residence of the ruler of what was then the Malay state of Setul, and now the Satun National Museum. It is the single most legible piece of the province's history: Satun was part of the Kedah Sultanate, became part of Monthon Syburi in 1897, and was awarded to Siam rather than Britain under the Anglo-Siamese Treaty of 1909 while the rest of Kedah went the other way. The museum sets that out, along with the Malay-Muslim and Thai-Buddhist cultures that have intermarried here for centuries.

Eight kilometres south of the provincial town, Tammalang pier runs scheduled crossings to Kuah on Langkawi — around an hour and a quarter on the fast boats — and to Kuala Perlis on the Malaysian mainland, with immigration processed at the pier. It is one of the more useful things about Satun and one of the least known: a duty-free island, an international airport and a second country, all inside a morning from a Thai province that has no airport of its own. Timetables and crossing rules change, so confirm both before relying on either.

Not a resort destination, and that is the point. Ko Sarai is a subdistrict of Mueang Satun made up of three island groups totalling 243 square kilometres, with a population recorded at 5,077 in 2012 living on fishing, farming and a little tourism; the largest village, Ban Ko Sarai, sits on a thirteen-square-kilometre island of the same name. For anyone who wants to see what the Andaman looks like when it is a place people work rather than a place people holiday, this is the nearest honest answer to that question in the province.