cairus

Updated: June 14, 2025

Mexico, Central America, and Peru are dotted with the ruins of stone edifices, but in all the mound-building area of the United States not the slightest vestige of one attributable to the people who erected the earthen structures is to be found. The utmost they attained in this direction was the construction of stone cairus, rude stone walls, and vaults of cobble-stones and undressed blocks.

Cyrus Thomas - The Problem of the Ohio Mounds