Jun

08

The Yellowstone caldera is the largest volcanic system in North America and accounts for much of the park's renowned geothermal activity.

Jun

08

The Yellowstone caldera is the largest volcanic system in North America and accounts for much of the park's renowned geothermal activity.

Jun

08

The Yellowstone caldera is the largest volcanic system in North America and accounts for much of the park's renowned geothermal activity.

Jun

08

The Yellowstone caldera is the largest volcanic system in North America and accounts for much of the park's renowned geothermal activity.

Jun

08

The Yellowstone caldera is the largest volcanic system in North America and accounts for much of the park's renowned geothermal activity.

Jun

08

The Yellowstone caldera is the largest volcanic system in North America and accounts for much of the park's renowned geothermal activity.

Jun

08

The Yellowstone caldera is the largest volcanic system in North America and accounts for much of the park's renowned geothermal activity.

Jun

08

The Yellowstone caldera is the largest volcanic system in North America and accounts for much of the park's renowned geothermal activity.

Jun

08

The Yellowstone caldera is the largest volcanic system in North America and accounts for much of the park's renowned geothermal activity.

Jun

08

The Yellowstone caldera is the largest volcanic system in North America and accounts for much of the park's renowned geothermal activity.

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