Portolan charts were realistic depictions of coastlines and their ports, drawn by navigators from their own experience and for their own guidance. Portolan charts came about in the late 13th century. The maps that Hapgood studied were portolano, or port to port, maps. In fact, it corresponded with fifty-five specific geographical locations on the continent. The report showed there was high correlation between Antarctica under the ice with large portions of the map. Writing to the United States Air Force, he asked if there was any correlation between various geographical details on the Piri Reis Map and results of seismic findings conducted by the Swedish-British-Antarctic Expedition of 1949. However, when we refer to Antarctica as a continent, we are referring to Greater Antarctica, which is roughly the size of the continental United States. Another amazing thing that attracted him to this map was that it appeared to show the continent of Antarctica, three centuries before it was discovered in 1818.Īntarctica is actually two large bodies of land, Greater and Lesser Antarctica.
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