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_0015
U.S. Geological Survey:
DSC_0017
U.S. Geological Survey:
DSC_0019
U.S. Geological Survey:
DSC_0020
U.S. Geological Survey:
DSC_0022
U.S. Geological Survey:
DSC_0023
U.S. Geological Survey:
DSC_0025
U.S. Geological Survey:
DSC_0027
U.S. Geological Survey:
DSC_0028
U.S. Geological Survey:
DSC_0032
U.S. Geological Survey:
DSC_0035
U.S. Geological Survey:
DSC_0042
U.S. Geological Survey:
DSC_0043
U.S. Geological Survey:
DSC_0044
U.S. Geological Survey:
DSC_0045
U.S. Geological Survey:
DSC_0046
U.S. Geological Survey:
DSC_0048
U.S. Geological Survey:
_DSC8449
U.S. Geological Survey:
_DSC8454
U.S. Geological Survey:
_DSC8456
U.S. Geological Survey:
_DSC8459
U.S. Geological Survey:
_DSC8468
U.S. Geological Survey:
_DSC8474
U.S. Geological Survey:
_DSC8477
U.S. Geological Survey:
_DSC8478
U.S. Geological Survey:
_DSC8479
