Why Geologists Think Colorado Is the Most Dangerous State

Colorado may look ancient and permanent, but beneath the mountains lies a landscape that has been repeatedly destroyed, buried and rebuilt.

In this DiscoverTube investigation, we explore how ancient continental collisions, vanished seas, massive volcanic eruptions, active rifting, moving landslides and even human-triggered earthquakes have shaped the state.

From nearly two-billion-year-old rocks and dinosaur tracks to the La Garita supervolcano and the Rio Grande Rift, Colorado preserves an extraordinary record of Earth’s changing surface.

The mountains may look still.

But Colorado is still changing.

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