This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Photograph of Part of the Serpent Mound in Serpent Mound State Park NARA .tif Scope and content Original caption Part of the Serpent Mound in Serpent Mound state park west of Pertsmouth Ohio This mound is more than mile in length and in some places as much as ' high Mounds such as this were built by prehistoric Indians and although