Evidence of stone technology at Pumapuncu:

Modular concrete

Andesite block with equi-distant drilled holes

'roads' that lead no-where - 'The Needle' Nazca

evidence of a huge wash-out - 'The Needle' Nazca

iconic depiction of exploding bolide discovered recently

it never rains on the altiplano

We haven't touched the surface of what exists in the area. Thanks for posting the brilliant images, Blam.
whoops! forgot to ping ya...