[quote=@Chromane]
How thick are the islands themselves?

I suppose after a while the islanders would be pretty much acclimatized to the reduced oxygen at altitude.

2000 or a bit more does seem to be the limit for a tower though.
[/quote]

Oh shit that's a good question. My working explanation has been that the tectonic plates themselves broke free and floated up. How thick are tectonic plates? I'll work on it tomorrow, I need some sleep.

I will say that it might end up being one of those things where it's better to just not worry about the specifics in this case, so as to not drive myself crazy trying to come up with realistic numbers when we could just be rping