Towers of the Virgin and West Throne at sunrise. Zion NP. Arizona.
Stunning masterpiece in stone,The Wave. at Grand Staircase-Escalante National Monument. Arizona.
Sandstone boulder at Vermilion Cliffs Wilderness. Arizona.
Light-painted image of Chess Queen under the Milky Way.
Steam rising in early morning light at Midway Geyser Basin in Yellowstone National Park.
Geothermal waters at Yellowstone National Park in Wyoming.
Colorful bacteria mats ring the hot waters of Grand Prismatic Spring.
Sunset clouds over white gypsum dunes at White Sands National Monument in southern New Mexico.
Sulfur crystals and fumaroles at Hverir. Iceland.
Ice from wind-whipped Lake Michigan coats the St Joseph Lighthouse.
Evening light on Twelve Mile Beach. UP Michigan.
Clearing storm over Lake Superior in Michigan's Upper Peninsula.
Foggy morning in Paradise area on the flanks of Mount Rainier.
Narrowleaf cottonwood leaf on a rock in the Crystal River. Colorado.
Foggy summer sunrise at Fox Island. Indiana.
Fireflies swirl under thundercloud skies in an Indiana meadow.