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a ranger surveying a lava field in Virunga National Park, Democratic Republic of the Congo
July 20, 2016

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In the Democratic Republic of the Congo's Virunga National Park, a ranger surveys a new lava field created by Nyamulagira, the most active volcano in Africa. The 10,033-foot peak erupts roughly every two years. In the foreground is a sulfur deposit from a recent eruption.

See more pictures from the July 2016 feature story "Inside the Fight to Save One of the World’s Most Dangerous Parks."

Photograph by Brent Stirton
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