earth-constructed

Updated: June 6, 2025

Be the cause what it may, there is no doubt that there is a difference; and it is reasonable to expect that in the regions lying between the southern earth-constructed and the northern stone structures, intermediate types might be found which would connect them.

Cosmos Mindeleff - Aboriginal Remains in Verde Valley, Arizona: Thirteenth Annual Report of the Bureau of Ethnology to the: Secretary of the Smithsonian Institution, 1891-92,: Government Printing Office, Washington, 1896, pages 179-262