On Russia’s Kamchatka Peninsula, fire and ice meet to form an otherworldly underground. Located on a slope of the peninsula’s Mutnovsky volcano, the cave’s stream is fed by volcanic hot springs. Sunlight filters through thinning glacial ice above.

“It took me two trips to the shoreline and a number of attempts to obtain the image I wanted,” he writes. “It was meant to emphasize the incredible number of birds, their sense of freedom, and the sheer power of nature.”