Have been following this show / treasure search on one episode i did notice one thing most seemed to just not take a lot of notice
The Coffer dam episode when they managed to drain the bay area
looking for evidence of the flood tunnels
When it was drained the drilling at the money pit reported LESS water coming back into the hole suggesting that because the water was drained there was a direct connection to the lack of water behind the coffer dam and the lack of water going back into the money pit drilling hole ?
It seems to suggest that there is a flood system and they were not far from discovering it . But seemed to glance over that one piece of vital information