Not For The Faint-Of-Heart!

I spotted this on DeMilked and thought it is one of the coolest things I've ever seen.  It certainly could be quite overwhelming for the claustrophobic.  But if I were to have the opportunity to experience this, I would pop a Xanax and take the dive!  And when dining, I think I will order turf and skip the surf - let's not anger the natives....