Duncan Usher / Trunks of burnt forest and Absaroko Range mountains viewed from Lake Butte, on North shore of Yellowstone Lake, Yellowstone National Park, Wyoming

Tim Fitzharris / New Melones Lake surrounded by foothill Oak woodlands, man-made reservoir managed by Central Valley Project, Calaveras County, California

Tim Fitzharris / Oak tree at Gloryhole Recreation Area, New Melones Lake, man-made reservoir managed by Central Valley Project, Calaveras County, California

Tim Fitzharris / Oak tree at Gloryhole Recreation Area, New Melones Lake, man-made reservoir managed by Central Valley Project, Calaveras County, California

Tim Fitzharris / Oak tree at Gloryhole Recreation Area, New Melones Lake, man-made reservoir managed by Central Valley Project, Calaveras County, California

Tim Fitzharris / Laurel Mountain and Convict Lake framed by barren trees in winter, eastern Sierra Nevada, California

Konrad Wothe / Winter Aspen canopy, Yellowstone National Park, Wyoming

Duncan Usher / Bare trunks of burnt forest, Yellowstone Lake, Yellowstone National Park, Wyoming