U.S. Geological Survey:
DSC_0001
U.S. Geological Survey:
DSC_0002
U.S. Geological Survey:
DSC_0005
U.S. Geological Survey:
DSC_0006
U.S. Geological Survey:
DSC_0007
U.S. Geological Survey:
DSC_0025
U.S. Geological Survey:
DSC_0038
U.S. Geological Survey:
DSC_0043
U.S. Geological Survey:
DSC_0046
U.S. Geological Survey:
DSC_0062
U.S. Geological Survey:
DSC_0064
U.S. Geological Survey:
DSC_0067
U.S. Geological Survey:
DSC_0068
U.S. Geological Survey:
DSC_0070
U.S. Geological Survey:
DSC_0074
U.S. Geological Survey:
DSC_0076
U.S. Geological Survey:
DSC_0079
U.S. Geological Survey:
DSC_0083
U.S. Geological Survey:
DSC_0086
U.S. Geological Survey:
DSC_0089
U.S. Geological Survey:
DSC_0091
U.S. Geological Survey:
DSC_0096
U.S. Geological Survey:
DSC_0100
U.S. Geological Survey:
DSC_0111
U.S. Geological Survey:
DSC_0125
U.S. Geological Survey:
DSC_0127
U.S. Geological Survey:
DSC_0143
U.S. Geological Survey:
DSC_0144
U.S. Geological Survey:
DSC_0146
U.S. Geological Survey:
DSC_0148