Oregon Field Guide

Season 21, Episode 5

Season 21 Episode 2105 | 27m 48s

Forest Thinning - An unusual alliance of folks are working together to help protect our forests. Oregon Cave Cleaning - See what incredible steps are taken to give the Oregon caves a good cleaning. Portland Stairways - Explore the fascinating history of Portland's hidden and not-so-hidden public stairways.

Aired: 11/04/09

Rating: TV-G

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