Gerhard Pratt:
Geological Field School, Whitefish Falls 2013
Gerhard Pratt:
Geological Field School, Whitefish Falls 2013
Gerhard Pratt:
Geological Field School, Whitefish Falls 2013
Gerhard Pratt:
Geological Field School, Whitefish Falls 2013
Gerhard Pratt:
Geological Field School, Whitefish Falls 2013
Gerhard Pratt:
Geological Field School, Whitefish Falls 2013