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Continue to ChatEl Malpais National Monument - Sandstone Bluffs https://gregdisch.com/2010/08/13/el-malpais-national-monument-sandstone-bluffs/
El Malpais National Monument - Sandstone Bluffs https://gregdisch.com/2010/08/13/el-malpais-national-monument-sandstone-bluffs/