Located in the Four Corners area on First Nations Diné (Navajo) Nation Land, the geological dome was created due to volcanic activity. Deep in the earth, extremely hot temperatures liquified the rocks. When they reached the surface, they cooled and hardened again. The hot magma beneath these re-hardened rocks kept pushing to the surface. This created this unique dome.
Historical Marker Inscription
Colorful red rocks of Entrada Sandstone are domed up by deep seated igneous intrusions to be exposed by erosion. The same igneous activity created the Carrizo Mountains to the west. Uranium deposits in the Morrison Formation just above the Entrada created New Mexico’s first uranium boom in the East Carrizo south of here in the 1950’s. Elevation 5,600 feet.
Location
36° 49’ 51.912” N, 109° 0’ 53.090” W498 US-64, Shiprock, NM 87420, United States
Historical Markers of the World 