Khao Sok Region (Surat Thani Inland)

Cheow Lan Lake is not a natural body of water, but rather the reservoir of the Ratchaprapha Dam, completed in 1987, which flooded a valley system in Khao Sok National Park. The lake spans approximately 185 square kilometers. From the water, the peaks of limestone mountains emerge as steep rock towers; the landscape is often compared to Guilin in Southern China.Typical are the raft houses: simple bungalows on pontoons in quiet side arms, rented by the park administration and private operators. Electricity is often only intermittent, mobile reception not everywhere. Expect a basic standard.From the pier at the dam, longtail boats transport visitors to the accommodations. Common activities include canoe tours in the side arms, short jungle treks, and excursions to the caves Nam Talu and Pra Kie.In the mornings, fog often settles between the rocks, which is when you are most likely to spot hornbills, gibbons, and macaques. Plan at least one overnight stay, as day trips involve significant travel time.

The Sok River runs along the western edge of Khao Sok National Park and flows past Khlong Sok village, home to most of the region's accommodations. Many lodges are situated directly on its banks, making the river at once a transport route, a swimming area, and a scenic vista.On the water, activities include tubing, canoe trips, and rides on bamboo rafts. The current is mostly calm, making the tours more about the scenery than strenuous sport: Above the river, the park's limestone cliffs ascend, and with a little patience, hornbills, kingfishers, and monkeys can be spotted along the banks.The water level fluctuates significantly. After rain, the river carries much more water, while during the dry season, it can become very shallow in certain areas; operators adjust routes accordingly. Early mornings and dusk are the best times for wildlife observation, and the heat is more tolerable than at midday.

The Pra Kie Cave, also known as Coral Cave, is located on the shores of Cheow Lan Lake in Khao Sok National Park. It earned its nickname due to the stalactites and stalagmites whose porous, branching surfaces resemble corals.The cave is only accessible by water: Longtail boats take you from the raft houses or the pier at the dam into the bay, from there a short path leads to the entrance.Unlike Nam Talu, Pra Kie is a dry cave without water passages. It is therefore often offered when Nam Talu is closed. The ground is nevertheless damp and slippery, so sturdy shoes and a headlamp are essential.Do not break anything, do not touch anything: The formations grow over millennia. Guided tours are organized by the accommodations by the lake.

Around the Visitor Center of Khao Sok National Park, the region's infrastructure has congregated in Khlong Sok village: guesthouses and lodges along the road and river, tour offices, restaurants, and a small market. The main road between Surat Thani and Takua Pa passes directly by, making the location easily accessible from both coasts.From the park entrance, the main hiking trail begins, following the valley with branches leading to several waterfalls. Night hikes are only possible with a guide and are organized locally. During the dry season, especially from January to March, the Rafflesia kerrii blooms in the region, with flowers reaching 50 to 90 centimeters in diameter.The village also serves as a starting point for trips to Cheow Lan Lake, available as day or overnight tours.Several elephant camps operate in the vicinity, each with a very different approach. Those who value animal welfare should check in advance what a camp truly offers.

The **Nam Talu Cave** is a river cave in Khao Sok National Park on Cheow Lan Lake. A stream flows through the limestone mountain, with the path often leading through water: knee-deep, sometimes deeper, and some sections requiring swimming. Inside, you'll find stalactites and bats.Access is by boat and hike, usually as a day trip from one of the raft houses. A **licensed guide is mandatory**.The reason is serious: Eight tourists died in a flash flood in the cave in October 2007, and a guide in August 2024. The cave is therefore closed from June 1 to November 30; even outside this period, it can close at short notice after rain.You should bring shoes that can get wet and provide grip, a headlamp, and waterproof packed items. If you cannot swim or tolerate confined spaces poorly, you should skip the tour.