Endemic Silversword at Haleakala Volcano Crater, Argyroxiphium sandwicense ssp. Macrocephalum, Maui, Hawaii, USA
Eruption of the Helgafell Volcano on the island of Heimaey in the Vestmann Isles south of Iceland, 150 meters from the town of Vetmannaeyjar. The...
Stereograph of the Cinder Cone near the foot of Toroweap, Grand Canyon National Park, Arizona, 1875. Image courtesy USGS. .