Thungyai-Huai Kha Khaeng Wildlife Sanctuaries

The Thungyai Naresuan Wildlife Sanctuary (Thai: เขตรักษาพันธุ์สัตว์ป่าทุ่งใหญ่นเรศวร) and Huai Kha Khaeng Wildlife Sanctuary (ขตรักษาพันธุ์สัตว์ป่าห้วยขาแข้ง) are adjacent parks in the Uthai Thani, Kanchanaburi, and Tak Provinces of Western Thailand. At 622,200 hectares combined, they form the largest protected area in Southeast Asia, and were listed as a UNESCO World Heritage Site in 1991. They are best visited from Uthai Thani.

Landscape
The reserves consist of almost every kind of forest found in Thailand, including mountain virgin forest, dry virgin forest, and pine forest. They have a total area of about 5,775 km². They are the watershed of rivers flowing to Srinakharin Dam.

Flora and fauna
The relatively unspoiled nature of the reserves makes them an ideal home to various rare and endangered animals such as wild buffalo, rhinoceros, wild elephants, tapirs, leopards, wild bulls, et al.

Get in
There are 2 routes to the Huai Kha Khaeng reserve:


 * Enter through the reserve headquarters. Take the Uthai Thani-Nong Chang Rd (Hwy 333) past Nong Chang to Rte 3438 (Nong Chang-Lan Sak) to km53-54, then turn left onto a laterite road for about 14 km.
 * Access to the Thungyai Reserve is harder, as the roads are poor. Take the route Thong Pha Phum-Sangkhla Buri near Huai Suea to Khli Ti Village, a distance of 42 km. After that, there is an intersection leading to the Wildlife Sanctuary Headquarters at Huai Song Thai, another 40 km.

Fees and permits
Designated points in both sanctuaries, listed below, are open to visitors. Access anywhere else in the parks or staying overnight requires permission, obtained by writing at least 15 days in advance to the Director of the Wildlife Conservation Office at the National Park, Wildlife and Plant Conservation Department, Bangkhen, Bangkok. Tel. +66 2 5614292-3 ext. 765.

Get around
Huai Kha Khaeng Wildlife Sanctuary has 3 points through which visitors can tour the area:

1. The area around the reserve headquarters is in Lan Sak, 34 km from the district. The area has an exhibition building and the Sup Nakhasathian Memorial. The Khao Hin Daeng walking nature trail is about 4 km long. There is also the Pong Thian viewpoint.

2. The area around the Cyber Forest Protection Unit in Huai Khot is the site of the Huai Kha Khaeng Nature and Wildlife Study Centre to be set up by a private organization of Suep Nakhasathian Foundation under the approval of the Royal Forest Department. The centre consists of a study hall, a nature trail that with direction and information signs, trail side exhibitions, and viewpoints.

3. The area around Huai Mae Di Forest Protection Unit in Ban Rai has a nature study walking trail installed by the park.