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active volcanoes
Alaska
1
Alaska explorers
1
Alaskan exploration
1
B. C.
1
Bayne Beauchamp
1
Berkeley
1
Chilkoot Pass
1
Francis Matthes
1
Geology
1
Joe Crosson
1
KEY WORDS
1
Kamchatka
1
Klondyke
1
Mt. McKinley
1
Northwest
1
Pacific -- History -- 20th century
1
QE1-996.5
1
San Francisco
1
U. S. Geological Survey
1
Vancouver
1
White Horse
1
active layer
1
caribou
1
glacier
1
gold
1
ground properties
1
ground temperatures
1
monitoring
1
mountain permafrost
1
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