Ooc6
That hadn't been looked at. The mists are about 10-15 feet above the water at the top. Same away from the waterfall. and again the same above the pool at the bottom.
The only things discovered about the most is that 5 feet in. A warding effect confuses the mind to where you are. There is no save and no resistance to it.
The rock slopes to either side are dangerous to climb, however the left side has a path you spotted that you can climb up without skill checks or issue.
If flying or hovering uo, just indicate where you do it, ie if you fly up along the waterfall or fly up along the rocks.