[muawiyah]

Although it is frequently argued that the mounds at Seymour, Indiana are a "natural formation", the major mounds pretty well follow the pattern of those shown in the above picture.

BTW, the Seymour mounds were pronounced "natural" on the basis that none of them contained human remains or artifacts. Interestingly enough, the old mounds in Peru also do not contain any human remains or artifacts.

[Choose Ye This Day]

Here's what the mounds looked (look?) like in Caral: