Tall grass prairie in fall. Wind Cave National Park, South Dakota, USA. http://www.terragalleria.com/parks/np-image.wica0577.html Tall grass prairie and wildflowers, South Unit, late afternoon. Theodore Roosevelt National Park, North Dakota, USA. http://www.terragalleria.com/parks/np-image.thro8693.html 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 Tall grass prairie near Cedar Pass. Badlands National Park, South Dakota, USA. http://www.terragalleria.com/parks/np-image.badl0585.html Tall grasses and pink cloud, sunrise. Wind Cave National Park, South Dakota, USA. http://www.terragalleria.com/parks/np-image.wica8638.html Teepees and tall grass prairie, Head-Smashed-In Buffalo Jump. Alberta, Canada http://www.terragalleria.com/north-america/canada/alberta-misc/picture.caab34015.html Tall grass prairie and wildflowers, South Unit, late afternoon. Theodore Roosevelt National Park, North Dakota, USA. http://www.terragalleria.com/parks/np-image.thro20718.html 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 Tall prairie grasses blown by wind and cliff, Head-Smashed-In Buffalo Jump. Alberta, Canada http://www.terragalleria.com/north-america/canada/alberta-misc/picture.caab34002.html Prairie of tall grasses with subtle autumn color. Wind Cave National Park, South Dakota, USA. http://www.terragalleria.com/parks/np-image.wica20728.html Backlit tall grasses. Theodore Roosevelt National Park, North Dakota, USA. http://www.terragalleria.com/parks/np-image.thro8697.html Tall grass and hills at Bison Flats, sunrise. Wind Cave National Park, South Dakota, USA. http://www.terragalleria.com/parks/np-image.wica8637.html Tall grass prairie. Wind Cave National Park, South Dakota, USA. http://www.terragalleria.com/parks/np-image.wica0578.html Tall grass prairie and badlands near Cedar Pass. Badlands National Park, South Dakota, USA. http://www.terragalleria.com/parks/np-image.badl20744.html Tall grass prairie and mountains. Waterton Lakes National Park, Alberta, Canada http://www.terragalleria.com/north-america/canada/waterton/picture.caab34030.html Tall prairie grasses with cliff in the distance, Head-Smashed-In Buffalo Jump. Alberta, Canada http://www.terragalleria.com/north-america/canada/alberta-misc/picture.caab34000.html