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Zhangjiajie Sandstone Pillars

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Zhangjiajie Sandstone Pillars — Green

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The Glittering Caves of Aglarond

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Glacial Meltwater Lake — White, Dramatic, Afternoon

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Dragon on Cliff Edge — Green

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Geothermal Spring — Blue, Serene, Afternoon, Photograph

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National Geographic Explorer Ship — White

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Lava Lake in Crater — Red, Dramatic, Night, Photograph

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Blue Topaz Gemstone

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Mountain Peak Landscape

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Aerial view of Mount St. Helens

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Road to a snow-capped mountain

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Dinosaurs fleeing eruption

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Explorers on Mount Erebus

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Rocket launch at Cocoa Beach

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Scientists on an ice floe

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Explorers in an ice cave

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Deep-sea submersible on ocean floor

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Lava Field at Sunset — Orange

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Paragliders over Mount Fuji

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Lava flow at Nyiragongo

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