Big Bend National Park
Cerro Castellan (or Castolon Peak) is a butte capped by remnants of a Miocene-age lava flow (Delaho Formation) overlying volcanic ash and stream deposits of Oligocene age (Chisos Formation). The butte is located near Castolon and near the intersection of the River Road and the Ross Maxwell Scenic Drive in western Big Bend National Park.
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The URL is: https://gotbooks.miracosta.edu/gonp/bibe/html2/bb368.htm
Last modified: 8/8/2010