Circular features site in the Florida Keys.  The circles range in size from 20-60 feet.

Circular, Mima Mounds along the Eastern edge of the Western Sahara Desert in Africa.  The sites cover a very large area and continue for many miles over the barren landscape.

Several sites in the Bahamas that contain circular features that vary in size and location.

Vast Mima Mound site in Oregon.  Site extends from this main point up to a 20+ mile radius.  The circular features are between 30-60+ feet in diameter and aligned in rows that extend from water sources that are now dried up ancient river beds.

Several, large. circular features have been found in the Harney Basin, South East corner of Oregon.  The features are quite large and several circular features can be seen.  The most prominent feature is over 800 feet wide and contains five concentric rings. 

Underwater linear features off the coast of Cuba.

Carolina Bays are considered anomalies by many scientists.  The formation or cause of these oval, circular features has yet to be determined.

Underwater patterns off shore of Marathon in the Florida Keys visible for over 6 square miles.

Linear, underwater anomalies that can be seen on the Google Earth topographic data of the surface of the sea-floor.

Circular, oblong features aligned in rows off the Southern tip of Florida within the Florida Everglades.