A question on structure size

[wlievens]

As Vile said, all of these are actually possible given solid foundation support. The only one that I can see that might not be(easily) possible without magic is the last one. Either the far side has series of switch backs to ascend(or this side are so small we can't see them), the mesa has a ramp or switchbacks inside a partially hollow interior base, or the building materials were moved up magically.

Maybe the building materials were made in situ when they stripmined the top of the mountain?
They'd still have to get there of course.

[jfrazierjr]

They'd still have to get there of course.

Heh.... my brain is sitting here thinking of a REALLY long rope ladder...It would tend to discourage unwanted visitors...