Death Valley National Park is known as the land of extremes. It is the hottest, driest and lowest point in the US. Three million acres of desert wilderness. This is the Ubehebe Crater at the northern end of Death Valley. It is 600 feet deep and a half a mile across. This type of craters are known as Maar volcanoes, created by steam and gas explosions when hot magma rising up from the depths reached ground water. The intense heat flashed the water into steam, which expanded until the pressure was released as a tremendous explosion. Ubehebe, is the largest of these Maar volcanoes and was formed, possibly as recently as 300 years ago. Info based on data from the National Park Service. Thanks for stopping by, taking a look and for all your previous comments & favs. Dana