Man at the Kelso dunes in teh Mojave desert in California. The Kelso sand dunes in the Mojave Desert are tall. Upon reaching the top, the setting sun highlighted the elegant curves of the ephemeral sands. Itâs a dreamscape up there. The Kelso Dunes, also known as the Kelso Dune Field, the largest field of eolian sand deposits in the Mojave Desert, California.