Khao Sok National Park is in Surat Thani Province, Thailand. Its area is 739 km², and it includes the 165 square kilometer Cheow Lan Lake contained by the Ratchaprapha Dam. The park is the largest area of virgin forest in southern Thailand and is a remnant of rain forest which is older and more diverse than the Amazon rain forest
Khao Sok National Park is a nature reserve in southern Thailand containing dense virgin jungle, towerlike limestone karst formations and the man-made Cheow Lan Lake. It’s home to rare species such as the giant parasitic Rafflesia flower, hornbill birds, gibbons and tigers. The park can be explored by elephant-back safari, hiking trail, and raft, canoe or kayak via the Sok river.