Inca ashlar stonework is the dry-fitted polygonal masonry of the Andean empire — cyclopean ramparts at Sacsayhuamán and the terraced walls of Machu Picchu, where granite and andesite blocks are ground to interlock without mortar.

This design system reads the wall itself as the page: a low-chroma granite gray with a faint blue-green mineral cast, divided only by hairline shadow seams between precisely fitted stones. No paper, no white — the surface is stone.