Oregon Field Guide Season Premiere; Glacier Caves: Mt. Hood's Secret World

Mt. Hood may be the best place in the United States to see the inside of a glacier.

In 2011, a pair of Oregon cavers discovered the largest known glacier cave system in the lower 48 states, just a few hours from Portland. Now they return to Mt. Hood to explore more than a mile of caves and tunnels inside the Sandy glacier itself and to discover what role climate change may be playing in their formation.

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Showtimes

Thursday 10/10/13