This rectilinear feature has been spotted off the coast of NC, 22 miles SE of Harkers Island, North Carolina.
The circular feature is approximately 170 feet in diameter.
The mounds can be found approximately 8 miles SE of Guyuan in Central China.
Mounds near Tenino, Washington, near the Grand Mound Road. Mound diameter is approximately 30-35 feet.
Carolina Bays are considered anomalies by many scientists. The formation or cause of these oval, circular features has yet to be determined.
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.
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