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Steens Mountain escarpment of eastern Oregon, looking east into the Alvord basin. The escarpment is composed of thin lava flows cut by vertical dikes that feed the initial eruptions of the Columbia River flood basalts. These 17-million-year-old basalts represent the first direct manifestation of the Yellowstone hotspot.”

Geology Videos: A Landscape Over Time

Geology Videos: A Landscape Over Time

Center of the West educator George Miller creates fantastic videos on the geology of our region–and beyond! Check out his YouTube playlist, A Landscape Over Time, to take a deep dive into the ever-changing geology beneath your feet.