A series of circular features has been documented that range in size from 90-35 feet in diameter.  The sites in Saudi Arabia are ancient stone constructions, but the other circular sites in this article remain a mystery.

Underwater Circular Features off the Coast of Greece with similar dimensions and rectilinear features nearby.

The circular feature is approximately 170 feet in diameter.

Circular features near Little Bighorn Basin in Wyoming.  The average diameter of the features is 35 feet.

Circular and linear features in the region of Moquegua Peru.  The area spans a distance of 2 miles before the circular features start to disappear within the landscape.

Approximately 20 miles SE of Newman, Australia a large area of circular features can be seen. The features are approximately 20 feet in diameter.

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

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

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. 

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