Mysterious underwater 'UFO base' spotted off the West Coast

A mysterious formation lurking deep in the ocean has been spotted just a few miles off the coast of Southern .

Geographically known as Sycamore Knoll, the natural underwater structure looks like a bump pushing, with a flat, table-like top.

It has been studied by scientists for years, though recent claims by conspiracy theorists have suggested Sycamore Knoll might be an underwater ' base.'

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