Region
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Iceland
1
Illinois
1
Johannesburg
1
Kilauea Volcano (Hawaii)
1
Los Angeles
1
Mediterranean Region
1
Montana
1
Pembrokeshire
1
Peru
1
Philadelphia
1
Richmond
1
Sahara
1
San Francisco Bay Area
1
Seattle
1
South Africa
1
Sun
1
Tokyo (Japan)
1
Toronto
1
Utah
1
Virginia
1
Wales
1
Washington (State)
1
West Virginia
1
Yorktown (Va.)
1
Yukon
1