Photographers Dedicate Their Lives to Documenting Earth's Changing Crust

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roaring cyclone photo
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Here, O'Meara says, a roaring volcanic cloud of steam forms as hot lava pours into the sea. It spins off volcanic cyclones.

READ MORE: One Photographer's Harrowing Journey to the World's Most Remote Active Volcano

Photo credit: Steve and Donna O'Meara /National Geographic Image Collection