 Because this date clearly lacks any scientific meaning, geologists and archaeologists rarely mention it in their discussions of the Bimini Road.The marine limestone underlying the Bimini Road dates to the Sangamonian Stage, the last interglacial, when sea level was last high enough for the marine sediments, now lithified into limestone, to have accumulated.The consensus among geologists and archaeologists is that the Bimini Road is a natural feature composed of beachrock that orthogonal and other joints have broken up into rectangular, subrectangular, polygonal, and irregular blocks.