I've never understood the idea of building a booby trap & not having a "release mechanism". If you were to bury something so significant to you,
would you just be so much of an A-hole to say "if I can't have it, no one can...ever."?
I'd build a trap to discourage people from getting my goods, so I could later come along & get it.
What I'm getting at is, I bet there's a pit that will re-route the water. Probably right below whatever is there. I'd look for another depression
near by, and dig.
It doesn't make sense not to have one unless it IS a tomb & the buried was never meant to see the light of day. The evidence points to that not
being the case though.
edit on 26-11-2012 by V4SL4ND because: punk shoe ation.