Standing In The World's Largest Lake Of Lava

A wondrous and terrifying descent into the bowels of the Earth. Geoff Mackley, Bradley Ambrose, Nathan Berg became the first people to pull off this feat.

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Using heat proximity suits and Fire Brigade breathing apparatuses, the men were able to stay near the lake for forty minutes. Without the specialized protection they'd have been able to stand the heat for a mere six seconds.

Marum's caldera stretches an astonishing 7.5 miles in diameter was caused by the second largest volcanic explosion in known history, erupting around 50 A.D.