hasn't ryan and pitman given us an idea by their discoveries inthe Black Sea? and if it is the same on the ocean coast wouldn't that distance make it almost impossible to excavate and explore?I am thinking of reaching such layers underneath coastal waters. How far out? Don't know.
my other question is, wouldn't being underwater all those years make it practically impossible to get an accurate reading on the date of the structures?
i will cite the japanese controversial 'monument' as an example so we can have something to go on.