 Ruth Bennett McDougal Dorrough; Sonoran Desert - Peralta Cave Loop Trail, AZ [20150223] |
 Ruth Bennett McDougal Dorrough; Sonoran Desert - Peralta Cave Loop Trail, AZ [20150223] |
 Ruth Bennett McDougal Dorrough; Sonoran Desert - Peralta Cave Loop Trail, AZ [20150223] |
 Ruth Bennett McDougal Dorrough; Sonoran Desert - Peralta Cave Loop Trail, AZ [20150223] |
 Jean Hoekwater; Roy Tellini; Michael Young; Sonoran Desert - Peralta Cave Loop Trail, AZ [20150223] |
 Sonoran Desert - Peralta Cave Loop Trail, AZ [20150223] |
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