Oregon Field Guide

Biscuit Fire 10 Years Later; Balloon Archaeology

Season 23 Episode 2311 | 28m 10s

Biscuit Fire 10 Years Later - 10 years after the Biscuit fire, scientists have uncovered a treasure trove of surprises. Balloon Archaeology - Balloon archaeology provides a whole new view of mysterious circles now found in Oregon. Collier Glacier - 100 years of photos show the dramatic retreat of Collier Glacier.

Aired: 02/23/12 | Rating: TV-G

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