Cerro Blanco sand dune, located in the Sechura Desert in the south of Peru, measures 3,860 feet from the base to the summit. It towers over the quaint desert oasis town, Huacachina, and the best part of all is that you can ride dune buggies for hours and up to the top of the dunes and then strap a board to your feet and sand board down it all the way to the town below!