Landscape covered in volcanic ash and dust with the ash plume of the Eyjafjallajokull eruption in the distance, southern area, Iceland, Polar Regions

The archaeological ruins of Pompeii, UNESCO, Campania, Italy

Mundari woman in a traditional dress with face covered in ash posing on a rock, Mundari tribe, South Sudan, Africa

Sadhu covered with white ashes, Allahabad Kumbh Mela, largest religious gathering, Allahabad, Uttar Pradesh, India, Asia

Snow covering the ash and mud slides at Whalers Bay inside of the caldera at Deception Island, South Shetland Islands, Antarctica, Southern Ocean

Snow covering the old barrel staves at Whalers Bay inside of the caldera at Deception Island, South Shetland Islands, Antarctica, Southern Ocean

Snow covering the ash and mud slides at Whalers Bay inside of the caldera at Deception Island, South Shetland Islands, Antarctica, Southern Ocean

Children on Matupit Island. They have never known their island other then covered in ash, Tavurvur Volcano, Rabaul, East New Britain, Papua New Guinea, Pacific

Aerial view of Mt. Kilimanjaro 19335 ft or 5895 m, Reusch crater with ash cone and pit, Tanzania, Africa

Aerial view of Mt. Kilimanjaro 19335 ft. or 5895 m, Reusch Crater and ash pit, Tanzania, Africa

Aerial view of Mt. Kilimanjaro 19335 ft. or 5895 m, crater floor with ash cone and pit, Southern Ice field in the foreground, Tanzania, Africa

Ash-covered landscape and a vapor cloud under the sun-drenched morning cloud of ash from Eyjafjallajoekull Volcano, Iceland, Europe

Frost-covered European Rowan (Sorbus aucuparia) fruit

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

Mt. Griggs rises over the ash- and pumice-covered Valley of Ten Thousand Smokes in Katmai National Park. The ash-covered Knife Creek Glaciers can be seen coming out of the valley at right; Alaska, United States of America

Trident Volcano rises above the rugged ash-covered Knife Creek Glaciers in Katmai National Park; Alaska, United States of America

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

Mt. Griggs rises above the ash- and pumice-covered Valley of Ten Thousand Smokes in Katmai National Park; Alaska, United States of America

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

Hawaii, Big Island, Kalapana, Harry K. Brown Park, pedestrian crossing sign covered by lava

Trident Volcano rises above the ash-covered Knife Creek Glaciers at sunset in Katmai National Park; Alaska, United States of America