Treck from Ton Saï waterfall to Bang Pae waterfall
It''s not easy to refind the path at each place a tree obstruct the path, but you are realy in a tropical forest. Having GPS and an app with the map of the path is mandatory ( Open Street Map ). Next just enjoy nature. Wonderfull.
Coming from Ton Sai Waterfall, path is easy to find up to the waterfall.
Last point : need to have some experience in treck.