For anyone who has been diving there, how deep is the "waterfall dive"?
From what I have read, the trek up and down to the waterfall is pretty rough. Depending on the depth, I may take a 30 cf pony with harness to dive it. (And not take dive it with my BC and an 80 cf tank.)
The dive goes through a tunnel and under the waterfall, not so deep (less than 100 feet) but an overhead environment so I'd take the 80cf, maybe both. The 200 or so steps descend steeply but usually there are sherpas who will lug your gear up and down for a few bucks.