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.
Maybe an ancient nursing home?