Welcome to the Jungle!
Khao Sok National Park, home to Thailand’s largest virgin forest, is older and more diverse than the Amazon jungles of South America. It is thick and steep and I've come at the tail end of the monsoon so the weather is as hot and wet as a bowl of Tom Yum soup.
Somehow I don't think a tuk tuk will be a suitable form of transport like the rest of Thailand. Elephant may be the way to to go!