Underwater mound features seen off the coast of California.
A large, gridded topographic anomaly in the Atlantic Ocean seen with Google Earth.
This rectilinear feature has been spotted off the coast of NC, 22 miles SE of Harkers Island, North Carolina.
Linear, underwater anomalies that can be seen on the Google Earth topographic data of the surface of the sea-floor.
This rectilinear feature has been spotted off the coast of NC, 22 miles SE of Harkers Island, North Carolina.