The first video in #314 at ~ 4:44 and a little after - the object is about 55' down...and just what you want Marti, 50' of swamp.I may have miss heard but, didn't the seismic guy say it was only under 2 meters of over burden?
But, before that, at ~ 2:00 min in, he says ~ the blanketing stuff...about two meters ...basically below sea level.
So, yes, you heard right and so did I. The only conclusion that can be reached is that Jimmy Hoffa is buried down there...right next to D.B. Cooper, The Holy Grail...and my retainer from 8th grade.