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Semi-Precious Pebbles

Where you find agates, volcanoes—the source of the gas bubbles—are usually not far way.
Five Steps of Volcanic Rock

These falls are the record of a series of volcanic eruptions that happened in this area.
The Sandstone Top of the Canyon

This is not the easiest thing to do—especially in a 100 degree heat—but it’s worth it.
A Massive Volcanic Eruption

This rock is what remains from one of the biggest volcanic eruptions ever.
Volcanoes of Sand

What we found were strangely regular circles in the sandstone.
Tearing North America Apart

A map of the Midwest of the United States shows the distribution of basalt flows.
Fossilized Sand Dunes

This is Zion Canyon. Its 2000-foot sandstone cliffs are among the tallest of their kind.
Rockies 2.0

But why is it that these layers that were once horizontal are now standing on their heads?
Monument Rocks 1

This video explores Monument Rocks.
Monument Rocks 2

This video explores Monument Rocks.

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