Warden over on Lustria Online had this idea for Nazca line-styles carving to tie in with aircraft:

Quote Originally Posted by Warden
Hey I really like the Inca Dwarf concept! That would fit the dwarfs into the "lizardmen" realm really easily.

I think the colossal stone/golem structure in the bottom of this picture would make a great inca-dwarf contraption:

I also like the idea of the dwarfs being behind some kind of "Nazca Lines" construction. Maybe they were able to engineers these marvels by using a gyrocopter-like device? Or hot air balloons?