[1] The park's area is 78,125 rai ~ 125 square kilometres (48 sq mi)[2] and its highest peak is 1,077 metres (3,530 ft).

[5] The coastal park section at Khao Lak sea shore offers very clear waters and clean, quiet stretches of beach.

[4] Nearer the seashore, species such as cashew trees, Barringtonia asiatica, and Pandanus fascicularis (screw pine) flourish.

[5] The park is home to various reptile species including Bengal monitor and Malayan pit viper.

[4] Other birds include great argus, streaked bulbul, maroon woodpecker, red junglefowl, ashy drongo, common myna, and barbet.