Intricate boxwork in Wind Cave, a cave formation found here more than anywhere else, Wind Cave National Park, South Dakota, USA

Mitchell Creek with tree reflections in late autumn, Big Rapids, Central Michigan, USA

Wind-blasted snow clinging to hardwood trees after a winter storm in Mecosta County, Michigan, USA

Patterns of ice on the Upper Harbor in February in Marquette, Michigan, USA

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Intricate ice crystals growing on a window pane in winter in Michigan, USA

Forest reflections on a pond in Canadian Lakes, Michigan, USA

Best seen on black: press L to view.

Death Valley National Park, California

Whaler's Dory

Sunflower 3. Things that I saw at the Norfolk, VA Zoo. Photography by Donna Corless.

Ripples catching sunlight on the surface of Mitchell Creek, Clay Cliffs Nature Area in Big Rapids, Michigan, USA

Ripples catching sunlight on the surface of Mitchell Creek, Clay Cliffs Nature Area in Big Rapids, Michigan, USA

Red Pine, Pinus resinosa, plantation in central Michigan, USA

Shadows of an oak tree on the snow in Mecosta County, Michigan, USA

Wind rippling the surface of Trap Lake along the Pacific Crest Trail, Mount Baker-Snoqualmie National Forest, Washington State, USA

Ice formed along the shore of the harbor in Ferryland, Newfoundland, Canada

Small waterfall along the Dungeness River in, near the Upper Dungeness Trail in Olympic National Forest, Olympic Peninsula, Washington State, USA

Nature's own Jackson Pollock must have been using this boulder along a creek bed in Central Oregon as an easel.