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Crater Lake is the deepest lake in the United States

Crater Lake is 1,943 feet deep, the deepest lake in the United States.

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It is also the deepest volcanic lake in the world. No rivers or streams feed it, so all of its water comes from rain and snow.

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The largest waterfall on Earth is underwater

The world's largest waterfall is in the ocean beneath the Denmark Strait.

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Yellowstone has more than 500 geysers

Yellowstone has more than 10,000 hydrothermal features, and more than 500 of them are geysers.

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Mauna Loa is the largest active volcano on Earth

Mauna Loa in Hawaii is the largest active volcano on the planet.

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