UFOrb
Contributor
I forgot to mention, as a matter of interest (possibly), at the end of my first wall dive you enter the Blue Hole (Dahab, Egypt) & skirt the inner wall to reach the exit point, which is awesome in itself. The 2nd time we dived it our DM took straight through the middle of the Blue Hole so could just see blue whichever way you looked, except for a couple of free-divers when we reached the centre - that was so cool, but even more difficult to keep you're bearings!