Volcanic Field
The Markagunt Plateau volcanic field is an area of basaltic cinder cones and blocky lava flows. The most recent flows occurred around 1050 CE and were preceded by a series of trachytic, andesitic and rhyolitic lava.
The field lies east of Cedar Breaks National Monument. Navajo Lake was formed when a lava flow dammed a creek on the plateau. Mammoth Cave is a lava tube cave located on the plateau. Markagunt Plateau
The youngest features of the Markagunt Plateau volcanic field are blocky unvegetated lava flows known locally as the 'Black Rock Desert.' They extend from near Miller Knoll on to the southeast. These flows also extend northeast to near Panguitch Lake.
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