You might find some interesting information about the area here:
This document talks about the opening of a road through the area, detailing the cultures along the way along with other stuff. Maybe you can open the document and copy the text into
This document is in English and tells about the area and the threats to wildlife and the ecosystems. Doesn't exactly answer your questions but it might help until someone who's actually taken this route answers you. Or maybe if you email parkswatch.com they can tell you who to contact for information?
