The Desert of Sinking Sands is located on Third Earth near of Black Pyramid.
History[]
Upon the Mutants first meeting with Mumm-Ra, they lost their Mutant Mothership to Desert of Sinking Sands. This cased them to be trapped on Third Earth. Later, after sometime on Third Earth, the mutants came to Mumm-Ra asking for Mumm-Ra to raise their ship. After considering, he raised the ship.