dunes are formed and re-formed, and sources and processes that are not yet fully understood. See also Deep Springs Valley References External links Eureka Sand Dune - Dune Guide Death Valley National Park - Eureka Dunes (NPS) Types of Dunes (USGS) Endangered Endemic Dune Plants (USGS) Valleys of the Mojave Desert Valleys of Inyo County, California Death Valley National Park Valleys of California