Sweet! Forget about shipwrecks- now with commercially available penetrating radar we can scout out sub-aquatic ancient civilizations and map out hot spots to dig. You know once anyone can get one of these that all the good stuff as far as shipwrecks is going to go REAL fast. Odyssey didn't take long to haul in the megabucks- and you know investors are looking into this as we speak. Ballard and his Titanic created a legacy and a monster- the mystique of shipwrecks is gone.

Howdy Dhardman

Geologists have been drilling into various places around the earth for a long time looking to understand the structure of underlying strata. As to date no recently submerged areas have emerged-except those known to have been covered over by rising waters.

In another thread about Kerguelen (sank 20 million years ago), you can look at how they do that.

So far no geologically sunken continents or islands that might contain a missing civilization.

The good news is that people have been searching, the bad news is nothing significant has been found