> let alone something of such staggering geometry. That’s what is so cool about it. It’s more or less the shape of a naturally occurring mountain, which just s

> let alone something of such staggering geometry. That’s what is so cool about it. It’s more or less the shape of a naturally occurring mountain, which just so happens to be the shape most resistant to erosion. Primitive interior arch-work and interior passageways notwithstanding.