Discovering Valhalla: Oregon's Hidden Gorge

Watch Now: Discovering Valhalla

By Oregon Field Guide (OPB)
Feb. 5, 2016 1:36 a.m.

Oregon Field Guide assembles its largest, most complex expedition ever to take you on an unparalleled adventure of discovery. They travel deep into the wilderness to explore and bring back the first images of a hidden geologic wonder right here in Oregon.

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THANKS TO OUR SPONSOR: