Sphinx water erosion hypothesis

The Sphinx water erosion hypothesis is a fringe claim, contending that the Great Sphinx of Giza and its enclosing walls eroded primarily due to ancient floods or rainfalls, attributing their creation to Plato's lost civilization of Atlantis over 11,500 years ago.

Egyptologists, geologists and others have rejected the water erosion hypothesis and the idea of an older Sphinx, pointing to archaeological, climatological and geological evidence to the contrary.