Box elder (boxelder maple) (maple ash) (Acer negundo) with yellow leaves in the fall, Zion National Park, Utah, United States of America, North America

Box elder (boxelder maple) (maple ash) (Acer negundo) branch with yellow leaves in the fall, Capitol Reef National Park, Utah, United States of America, North America

Ash tree, autumn foliage, Peak District National Park, Derbyshire, England, UK, Europe

A mountain ash tree with autumn foliage

Crowd at Kilauea Eruption,1924

Especially the children suffer from the constant ash fall, Tavurvur Volcano, Rabaul, East New Britain, Papua New Guinea, Melanesia, Pacific

Silver-colored 4x4 SUV driving along dirt road in volcanic landscape, Sprengisandsleid, Iceland

Hawaii, Big Island, near Kalapana, Pahoehoe lava flowing from Kilauea into Pacific Ocean.

Hawaii, Big Island, near Kalapana, Pahoehoe lava flowing from Kilauea into steaming Pacific Ocean.

Hawaii, Big Island, near Kalapana, Pahoehoe lava flowing from Kilauea into Pacific Ocean, Steam rising.

Hawaii, Big Island, Hawaii Volcanoes National Park, Kilauea Volcano, Detail of molten pahoehoe lava flowing downward.

Hawaii, Big Island, near Kalapana, Pahoehoe lava flowing from Kilauea into frothy Pacific Ocean.

Hawaii, Big Island, Hawaii Volcanoes National Park, Kilauea Volcano, Detail of flowing molten pahoehoe lava.

Hawaii, Big Island, Hawaii Volcanoes National Park, Kilauea Volcano, Detail of molten pahoehoe lava.

Hawaii, Big Island, near Kalapana, Pahoehoe lava flowing from Kilauea into frothy Pacific Ocean.

Hawaii, Big Island, near Kalapana, Pahoehoe lava flowing from Kilauea into Pacific Ocean.

Hawaii, Big Island, Hawaii Volcanoes National Park, Kilauea Volcano, Detail of molten pahoehoe lava flowing downward.

Hawaii, Big Island, near Kalapana, Close-up of pahoehoe lava flowing from Kilauea into Pacific Ocean.

Hawaii, Big Island, near Kalapana, Pahoehoe lava flowing from Kilauea into Pacific Ocean.

Hawaii, Big Island, near Kalapana, Pahoehoe lava flowing from Kilauea into frothy Pacific Ocean, Steam rising.

Hawaii, Big Island, Hawaii Volcanoes National Park, Kilauea Volcano, Detail of flowing molten pahoehoe lava.