Oregon Field Guide

Oregon Field Guide

Return to Mt. Hood Glacial Caves and Columbia Gorge Geology (28x10)


Data di messa in onda: Feb 16, 2017

The once spectacular glacier caves documented by Oregon Field Guide in 2013 are disappearing far faster than anyone predicted. Why? What role is climate and weather playing in the formation and destruction of these caves?

  • Iniziato: Feb 1990
  • Episodi: 174
  • Followers: 6
  • In corso
  • PBS
  • Giovedì alle 20