The Miami Circle is the name given to a strange series of 24 holes arranged in a perfect circle that are cut into the limestone bedrock in downtown Miami city (formerly Tequesta). It was discovered in 1998 when a customary pre-construction archaeological survey was carried out at Brickell Avenue. Based on radiocarbon dating it is generally accepted that the site was created 1800-2000 years ago. The circle is 38 feet in diameter and the holes were possibly postholes for a building of some sort. Both the date and the identity of the builders are disputed.
One radio-show host, Gene Weed, is convinced that there was a connection between the circle and Atlantis and has expressed this highly speculative view in a slender three-part publication of about 70 pages that can be downloaded as an e-book for an exorbitant €50.
*Sanity returned in an article on the Archaeology website(b).*
A most convoluted website(a) links the Miami Circle with theories of ancient astronomical knowledge while at the other end of the spectrum of conjecture is the idea that it is simply the remains of an old septic tank.