how far they were dropped downward by scour and settling processes is the Pleistocene limestone on which they now rest. Finally, pieces of thinner layers or lenses of beachrock underlying the primary bed that was broken up and dropped downward to create the Bimini Road would be trapped beneath the blocks as they also were broken up and dropped by erosion. The trapping of these fragments of beachrock beneath the blocks composing the Bimini Road, as erosion removed loose sediments and dropped them onto the surface of the Pleistocene limestone, would have created the so-called "prop" and "wedge" rocks and blocks alleged to be a "second course" of "masonry". Presuming that the blocks of beachrock forming the Bimini Road originally formed at some unknown depth below sea level and have been dropped by erosion by several metres, dating the age of the Bimini Road by its relation to past sea level would be a useless technique that would produce misleading results. Natural pavements composed of stone blocks, which often are far more rectangular and consistent in size than the blocks composing the Bimini Road, created by orthogonal and other jointing within sedimentary rocks, including beachrock, are quite common and found throughout the world. They include a popular tourist attraction, the Tessellated pavement of Eaglehawk Neck, Tasmania; jointed bedrock that has been completely misidentified as a man-made "Phoenician Fortress and Furnace" in Oklahoma; a "tiled pavement" reported from Battlement Mesa in western Colorado; the tessellated pavement of the Bouddi Peninsula near Sydney, Australia; and Arches National Park in Utah. Natural beachrock pavements that are identical to the Bimini Road have been found eroding out of the east shore of Loggerhead Key of Dry Tortugas and submerged beneath of water at Pulley Ridge off the southwest coast of Florida. Claims of a human origin Although it is generally considered to be a naturally occurring geological feature, as a result of the unusual arrangement and shape of the stones, some believe that the formation is the remains of an ancient road, wall, or some other deliberately constructed feature. For example, articles published in Argosy (an American pulp magazine) and either authored or coauthored by Robert F. Marx, a professional diver and visitor to the Bimini Road, argued that the Bimini Road is an artificial structure. In a 1971 Argosy article, Robert Marx reported that Carl H. Holm, who was President (not "head geologist"