If they found a body with any flesh present they should call the police, because in fresh water it would be all bones in under five years. Even in a deep well.
Salt water - two years; unless it's VERY deep.

http://www.treasurenet.com/forums/o...-oak-island-mini-series-january-5-2014-a.html so I won't rinse & repeat 

I have read that cold water can preserve bodies for a very long time. They say some cold lakes, like Superior are supposed to hold bodies forever.
This is more or less what I thought. Someone else has dived down that hole in the past looking for the treasure and gotten stuck and drowned. The rubber suit gives the body shape.unless maybe in a Rubber Dive suit.: