Khao Sok

The forest

Khao Sok National Park protects one of the oldest evergreen rainforests in the world, a ecosystem that has been continuously forested for a very long time and receives an enormous amount of rain.

It is also one of the best places in southern Thailand to see wildlife: gibbons, hornbills, langurs, civets, and — with a guide and some luck — elephants and the elusive tapir. The Rafflesia, the world's largest flower, grows here and blooms unpredictably.

The park is not a zoo and sightings are not guaranteed. A good guide with local knowledge is the difference between seeing things and walking through green.

Cheow Lan Lake

The lake was formed when a river was dammed in the 1980s, drowning a valley and leaving hundreds of limestone karst peaks sticking out of the water. It is one of the most striking landscapes in Thailand.

The floating bungalows — raft houses moored among the karsts — are the signature stay: basic, off-grid, reached by longtail boat, and completely quiet at night apart from the forest.

Days on the lake are spent swimming, kayaking, and taking boats to viewpoints and caves. The Nam Talu cave trip involves wading through a river inside a cave and is genuinely adventurous; it is closed in the rainy season, when it floods.

Rainforest or lake?

Khao Sok has two distinct bases, and people often book one expecting the other.

• Khao Sok village, at the park entrance — guesthouses, restaurants, and access to the forest trails, waterfalls and night safaris. This is where you go for jungle walking.
• The lake, about an hour further by road plus a boat — floating bungalows and karst scenery. This is where you go for the landscape.
• Most trips do both: a night or two in the village for the forest, then one or two nights on the lake.

When to go

The dry season, roughly December to April, is the best time for the lake, the trails and the cave trips. Water levels are high enough to reach the far karsts.

The rainy season from May to November is when the forest is at its most alive and the waterfalls at their fullest — but Nam Talu cave closes, some lake activities are limited, and the trails are muddy and leech-prone.

The lake is busiest at weekends and on Thai public holidays, when domestic visitors arrive in numbers. Midweek is noticeably quieter.

Getting there

Khao Sok sits between Surat Thani and Phuket, roughly halfway down the peninsula, which makes it a natural stop between the Gulf islands and the Andaman coast.

• From Surat Thani — about two hours by road, and the closest transport hub.
• From Phuket or Krabi — around two and a half to three hours.
• From Koh Samui or Koh Phangan — a ferry and a road transfer combined.
• There is no train and no airport at the park. Everyone arrives by road, usually in a minivan.