wica0579 Cave mouth, where strong winds equalize pressure between inside outside. Wind Cave National Park, South Dakota, USA. http://www.terragalleria.com/parks/np-image.wica0579.html wica20730 Boxwork ceilling cave formation. Wind Cave National Park, South Dakota, USA. http://www.terragalleria.com/parks/np-image.wica20730.html wica8637 Tall grass and hills at Bison Flats, sunrise. Wind Cave National Park, South Dakota, USA. http://www.terragalleria.com/parks/np-image.wica8637.html wica20728 Prairie of tall grasses with subtle autumn color. Wind Cave National Park, South Dakota, USA. http://www.terragalleria.com/parks/np-image.wica20728.html wica25437 Prairie grasses at sunrise. Wind Cave National Park, South Dakota, USA. http://www.terragalleria.com/parks/np-image.wica25437.html wica20724 Beebalm flowers, trees on skyline, morning. Wind Cave National Park, South Dakota, USA. http://www.terragalleria.com/parks/np-image.wica20724.html wica0576 Grassy hills and tree. Wind Cave National Park, South Dakota, USA. http://www.terragalleria.com/parks/np-image.wica0576.html wica8646 Ponderosa pines and rolling hills near Gobbler Pass. Wind Cave National Park, South Dakota, USA. http://www.terragalleria.com/parks/np-image.wica8646.html wica8632 Row of trees under a storm cloud at sunset. Wind Cave National Park, South Dakota, USA. http://www.terragalleria.com/parks/np-image.wica8632.html wica8634 Tree on Hill and storm cloud, sunset. Wind Cave National Park, South Dakota, USA. http://www.terragalleria.com/parks/np-image.wica8634.html wica8635 Sunflowers, hills, sunset. Wind Cave National Park, South Dakota, USA. http://www.terragalleria.com/parks/np-image.wica8635.html wica8654 Rolling hills covered with grasses and scattered pines, dusk. Wind Cave National Park, South Dakota, USA. http://www.terragalleria.com/parks/np-image.wica8654.html wica8647 Wild Bergamots (Monarda fistulosa, Lamiaceae). Wind Cave National Park, South Dakota, USA. http://www.terragalleria.com/parks/np-image.wica8647.html wica8649 Butterfly on horsemint flower (Monarda fistulosa, Lamiaceae). Wind Cave National Park, South Dakota, USA. http://www.terragalleria.com/parks/np-image.wica8649.html wica8650 Limestone cliff. Wind Cave National Park, South Dakota, USA. http://www.terragalleria.com/parks/np-image.wica8650.html wica25442 Forest edge in summer. Wind Cave National Park, South Dakota, USA. http://www.terragalleria.com/parks/np-image.wica25442.html wica8655 Pronghorn Antelope and hill. Wind Cave National Park, South Dakota, USA. http://www.terragalleria.com/parks/np-image.wica8655.html wica8657 Pronghorn Antelope cow and calf in the prairie. Wind Cave National Park, South Dakota, USA. http://www.terragalleria.com/parks/np-image.wica8657.html wica8658 Pronghorn Antelope bull and cow. Wind Cave National Park, South Dakota, USA. http://www.terragalleria.com/parks/np-image.wica8658.html wica8659 Pronghorn Antelope in pine forest. Wind Cave National Park, South Dakota, USA. http://www.terragalleria.com/parks/np-image.wica8659.html wica8661 Cottontail rabbit. Wind Cave National Park, South Dakota, USA. http://www.terragalleria.com/parks/np-image.wica8661.html wica8664 Prairie Dog town. Wind Cave National Park, South Dakota, USA. http://www.terragalleria.com/parks/np-image.wica8664.html wica0580 The cave unique boxwork, a calcite formation. Wind Cave National Park, South Dakota, USA. http://www.terragalleria.com/parks/np-image.wica0580.html wica0581 The cave unique boxwork, a calcite formation. Wind Cave National Park, South Dakota, USA. http://www.terragalleria.com/parks/np-image.wica0581.html wica25443 Boxworks underground formations. Wind Cave National Park, South Dakota, USA. http://www.terragalleria.com/parks/np-image.wica25443.html wica20731 Cave concretions. Wind Cave National Park, South Dakota, USA. http://www.terragalleria.com/parks/np-image.wica20731.html wica25444 Cave ceiling with boxwork. Wind Cave National Park, South Dakota, USA. http://www.terragalleria.com/parks/np-image.wica25444.html wica20732 Cave ceilling with rare boxwork concretions. Wind Cave National Park, South Dakota, USA. http://www.terragalleria.com/parks/np-image.wica20732.html wica25445 Cave walls. Wind Cave National Park, South Dakota, USA. http://www.terragalleria.com/parks/np-image.wica25445.html wica5895 Honeycombed cave formation. Wind Cave National Park, South Dakota, USA. http://www.terragalleria.com/parks/np-image.wica5895.html wica8638 Tall grasses and pink cloud, sunrise. Wind Cave National Park, South Dakota, USA. http://www.terragalleria.com/parks/np-image.wica8638.html wica20729 Tall prairie grass and dark sky at Bison Flats, early morning. Wind Cave National Park, South Dakota, USA. http://www.terragalleria.com/parks/np-image.wica20729.html wica8640 Prairie with tall grasses and dark sky, early morning. Wind Cave National Park, South Dakota, USA. http://www.terragalleria.com/parks/np-image.wica8640.html wica0577 Tall grass prairie in fall. Wind Cave National Park, South Dakota, USA. http://www.terragalleria.com/parks/np-image.wica0577.html wica0578 Tall grass prairie. Wind Cave National Park, South Dakota, USA. http://www.terragalleria.com/parks/np-image.wica0578.html wica25436 Prairie grasses on cloudy autumn morning. Wind Cave National Park, South Dakota, USA. http://www.terragalleria.com/parks/np-image.wica25436.html wica25438 Gently rolling hills with trees on ridge. Wind Cave National Park, South Dakota, USA. http://www.terragalleria.com/parks/np-image.wica25438.html wica25440 Prairie landscape with wildflowers and trees. Wind Cave National Park, South Dakota, USA. http://www.terragalleria.com/parks/np-image.wica25440.html wica8641 Wild Bergamot flowers, trees on skyline, morning. Wind Cave National Park, South Dakota, USA. http://www.terragalleria.com/parks/np-image.wica8641.html wica8643 Trees on hillside and clouds, morning. Wind Cave National Park, South Dakota, USA. http://www.terragalleria.com/parks/np-image.wica8643.html wica20723 Wildflowers and rolling hills with trees on crest. Wind Cave National Park, South Dakota, USA. http://www.terragalleria.com/parks/np-image.wica20723.html wica8644 Ponderosa pines on rolling hills. Wind Cave National Park, South Dakota, USA. http://www.terragalleria.com/parks/np-image.wica8644.html wica8645 Rolling hills with ponderosa pines. Wind Cave National Park, South Dakota, USA. http://www.terragalleria.com/parks/np-image.wica8645.html wica25439 Prairie, hills, and Ponderosa pine trees. Wind Cave National Park, South Dakota, USA. http://www.terragalleria.com/parks/np-image.wica25439.html wica25441 Meadow and young Ponderosa pine trees. Wind Cave National Park, South Dakota, USA. http://www.terragalleria.com/parks/np-image.wica25441.html wica8652 Flowers on meadow and hill covered with pine forest. Wind Cave National Park, South Dakota, USA. http://www.terragalleria.com/parks/np-image.wica8652.html wica20727 Flowers on meadow and hill covered with pine forest. Wind Cave National Park, South Dakota, USA. http://www.terragalleria.com/parks/np-image.wica20727.html wica20726 Purple Horsemint flowers and young ponderosa pines. Wind Cave National Park, South Dakota, USA. http://www.terragalleria.com/parks/np-image.wica20726.html wica8631 Lone tree and storm cloud, sunset. Wind Cave National Park, South Dakota, USA. http://www.terragalleria.com/parks/np-image.wica8631.html wica8633 Ponderosa pine on hill and pink storm cloud, sunset. Wind Cave National Park, South Dakota, USA. http://www.terragalleria.com/parks/np-image.wica8633.html wica20725 Grasses and rolling hills with pine trees. Wind Cave National Park, South Dakota, USA. http://www.terragalleria.com/parks/np-image.wica20725.html wica5896 Tallgrass prairie. Wind Cave National Park, South Dakota, USA. http://www.terragalleria.com/parks/np-image.wica5896.html wica8636 Hills, sunset. Wind Cave National Park, South Dakota, USA. http://www.terragalleria.com/parks/np-image.wica8636.html wica8653 Rolling hills covered with scattered pines, dusk. Wind Cave National Park, South Dakota, USA. http://www.terragalleria.com/parks/np-image.wica8653.html wica8656 Pronghorn Antelope cow and calf. Wind Cave National Park, South Dakota, USA. http://www.terragalleria.com/parks/np-image.wica8656.html wica8660 Pronghorn Antelope in pine forest. Wind Cave National Park, South Dakota, USA. http://www.terragalleria.com/parks/np-image.wica8660.html wica8662 Cottontail rabbit. Wind Cave National Park, South Dakota, USA. http://www.terragalleria.com/parks/np-image.wica8662.html wica8663 Rabbit and wildflowers. Wind Cave National Park, South Dakota, USA. http://www.terragalleria.com/parks/np-image.wica8663.html