Camden, Maine, 1982

Camden, Maine, 1982

Camden, Maine, 1982

Rocky Shore of Little Barred Island, Maine, June 25, 1982

From Cove Bridge, Great Spruce Head Island, Maine, August 1, 1982

From Cove Bridge, Great Spruce Head Island, Maine, August 1, 1982

Moss on Cinders, near Dam Site on Thjorsa River, Iceland, June 26, 1972

Moss on Cinders, near Dam Site on Thjorsa River, Iceland, June 26, 1972

Springs in River Gorge near Husafell, West Langjokull (Glacier), Iceland, July 9, 1972

Ice in Glacial Lake, Northern Edge of Eyjafjallajokull (Glacier) near Thorsmork, Iceland, July 7, 1971

Snowbanks on Mountain, Road to Landmannalaugar, North of Mount Hekla, Iceland, June 28, 1972

Snowbank and Ash from Eruption of Mount Helka near Dam Site on Thjorsa River, Thjorsardalur, Iceland, June 26, 1972

Lava Field North of Hekla, Road to Landmannalaugar, Iceland, June 27, 1972

Dettifoss, Iceland, July 24, 1972

Blue Vitrified Lava, Craters of the Moon [National Monument], Idaho, July 2, 1975

Volcanic Rubble, Fossardalur, Iceland, August 12, 1972

Roots and Eroded Sandstone, Gray's Arch Trail, Red River Gorge, Kentucky, April 18, 1968

Outflow from Hagavatn (Lake), Central Iceland, August 11, 1972

Red and Black Lava with Lichen, Craters of the Moon [National Monument], Idaho, July 2, 1975

Blue Penstemon, Craters of the Moon [National Monument], Idaho, July 2, 1975