You’re right I think that they have actually run across quite a bit of evidence apparently of more than one craft.
But, just dang! At first I thought that the craft might have broken up and was deposited in a rather far flung fashion. But some of what has been found is too much material for that theory to “stay afloat.”
I swear as soon as I thought stay afloat I tried to find another phrase, but it just locked me up. : )
Good pun.
Yes, there are entirely too many sites, and far too much ancient wood for it to have come from a single craft. What I keep returning to is the question of, what are all of those immense beams of ancient wood doing so far up that mountain?
From the photos and archaeological drawings I've seen, they're definitely not buildings, but they are in some sort of purpose-built layout, such as a large water vessel.
Nothing makes more sense to me, than the theory that they must have come to rest there when the water level was at that altitude. It's all very intriguing.