Junction Cave is a lava tube associated with lava flows from the El Calderon volcanic eruption period of about 115,000 years ago and is considered one of the oldest lava tubes in the national monument.
The URL of this page is: http://3dparks.wr.usgs.gov/2006/el_malpais/html2/elma0059.htm
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Last modified: 7/19/2006
