purple flower at st'mary lake, glacier national park, montana, usa.

mountain lake highland reservoir valley plateau wilderness moraine walking tourism ptarmigan sturdy continental divide trail montana landscape travel window silhouette light stone doorway hiking glacier national park built structure nature tunnel elizabeth ellen wilson landmark man iceberg beautiful evergreen mountaineering backpacking backcountry snow ice outdoors water pass green sky path rock yellow cliff forest pond warming alpine retreat mount climate baker change bridge usa falls mary st39aph39mary big purple flower field