1116-39555 - The eastern peak of Trident Volcano rises above the ash-covered Knife Creek Glaciers at sunset in Katmai National Park; Alaska, United States of America
1116-39560 - A backpacker crosses the exotic landscape of the ash and pumice-covered Valley of Ten Thousand Smokes in Katmai National Park, with Mt. Katmai (left), Trident Volcano (right), and the Knife Creek Glaciers looming in the distance; Alaska, United States of
1116-39553 - A man looks toward Trident Volcano through clouds while ascending the Knife Creek Glaciers in Katmai National Park; Alaska, United States of America
1116-39557 - A man is dwarfed by the jagged, ash-covered Knife Creek Glaciers and Trident Volcano in the Valley of Ten Thousand Smokes in Katmai National Park; Alaska, United States of America
29-1828 - Griggs volcano overlooks Valley of Ten Thousand Smokes filled by ash in 1912 eruption of Katmai, Katmai Volcano National Park, Alaska, USA, North America
29-1822 - Ignimbrite exposed in river canyons cut since 1912 eruption, in the Valley of Ten Thousand Smokes, in Katmai Volcano National Park, Alaska, United States of America, North America