Head West.

Waterfall means their may likely also be a cave not to far from it, and that could be a place to set up a shelter, of course if there are other mythical beast out there, itd make a nice home for them too. Even knowing that you head westward anyway. There is no path to follow really, but by listening closely youre able to keep in the right direction. You have to cross across some wild lands, downed logs and vines galore but soon you reach the spewing water.