What/WhereThe cave is part way up the Cathedral trail, after you break the tree line. It's a small crack in the rock as can be seen in the pictures, but is rather deep.
Judging from how we moved through it it seems to descend 30 feet into the ridge and an equal amount out to the cliff face making an almost right angle. I would suggest having headlamps for the cave or smaller lights work ok when you have someone guiding you through who has been there before. Each drop in the cave is between 5 and 6 feet, so it is hard to feel out foot holds.