| Two views southeast across Ubehebe Crater to the Grapevine Mountains in the background; reddish-brown and tan strata seen along the crater's walls belong to the Middle Oligocene Titus Canyon Formation. The crater is the result of a cryptovolcanic eruption precipitated by superheated ground water flashing to steam due to heating by magma; Ubehebe Crater probably was created in only a few minutes time. |