Spanish Fort Site (Holly Bluff, Mississippi) is located in Mississippi

The Spanish Fort Site (22-SH-500) is an archaeological site in the Delta region of the U.S. state of Mississippi. It is one of three major earthwork sites in the far southern portion of the Yazoo River valley, and it has been designated a historic site because of its archaeological value. Despite its name, the site was not built by the Spanish, and its original purpose is believed to have been ceremonial, not martial.

• http://en.wikipedia.org/wiki/Spanish Fort Site (Holly Bluff, Mississippi)