Alan Cressler:
Asplenium septentrionale, Black Elk Wilderness, Black Hills National Forest, Pennington County, South Dakota 1
Alan Cressler:
Asplenium septentrionale, Black Elk Wilderness, Black Hills National Forest, Pennington County, South Dakota 2
Alan Cressler:
Asplenium septentrionale, Harney Peak, Black Elk Wilderness, Black Hills National Forest, Custer County, South Dakota 1
Alan Cressler:
Asplenium septentrionale, Harney Peak, Black Elk Wilderness, Black Hills National Forest, Custer County, South Dakota 2
Alan Cressler:
Brian Killingbeck and Russell McLester, Chantilly Lace, Moonlight Ridge, Custer State Park, Custer County, South Dakata 1
Alan Cressler:
Cathedral Spires, Custer State Park, Custer County, South Dakota 1
Alan Cressler:
Cathedral Spires, from Little Devil's Tower, Custer State Park, Custer County, South Dakota 1
Alan Cressler:
Goodyera repens, Black Elk Wilderness, Black Hills National Forest, Custer County, South Dakota 1
Alan Cressler:
Grace Coolidge Creek, Grace Coolidge Natural Area, Custer State Park, Custer County, South Dakata 1
Alan Cressler:
Grace Coolidge Creek, Grace Coolidge Natural Area, Custer State Park, Custer County, South Dakata 2
Alan Cressler:
Grace Coolidge Creek, Grace Coolidge Natural Area, Custer State Park, Custer County, South Dakata 3
Alan Cressler:
Grizzly Bear Creek, Black Elk Wilderness, Black Hills National Forest, Pennington County, South Dakota 1
Alan Cressler:
Grizzly Bear Creek, Slot Canyon, Black Elk Wilderness, Black Hills National Forest, Pennington County, South Dakota 1
Alan Cressler:
Grizzly Bear Falls, Grizzly Bear Creek, Black Elk Wilderness, Black Hills National Forest, Pennington County, South Dakota 1
Alan Cressler:
Grizzly Bear Falls, Grizzly Bear Creek, Black Elk Wilderness, Black Hills National Forest, Pennington County, South Dakota 2
Alan Cressler:
Grizzly Bear Falls, Grizzly Bear Creek, Black Elk Wilderness, Black Hills National Forest, Pennington County, South Dakota 3
Alan Cressler:
Harney Peak Granite, Harney Peak, Black Elk Wilderness, Black Hills National Forest, Pennington County, South Dakota 1
Alan Cressler:
Harney Peak Granite, Harney Peak, Black Elk Wilderness, Black Hills National Forest, Pennington County, South Dakota 2
Alan Cressler:
Harney Peak Granite, Harney Peak, Black Elk Wilderness, Black Hills National Forest, Pennington County, South Dakota 3
Alan Cressler:
Harney Peak Highlands, Black Elk Wilderness, Black Hills National Forest, from Little Devil's Tower, Custer State Park, Pennington and Custer Counties, South Dakota 1
Alan Cressler:
Harney Peak Highlands, Black Elk Wilderness, Black Hills National Forest, from Little Devil's Tower, Custer State Park, Pennington and Custer Counties, South Dakota 2
Alan Cressler:
Harney Peak Highlands, from Mount Coolidge, Custer State Park, Custer County, South Dakota 1
Alan Cressler:
Harney Peak, Tower, Black Elk Wilderness, Black Hills National Forest, Pennington County, South Dakota 1
Alan Cressler:
Harney Peak, Tower, Black Elk Wilderness, Black Hills National Forest, Pennington County, South Dakota 2
Alan Cressler:
Harney Peak, view looking north, Black Elk Wilderness, Black Hills National Forest, Pennington County, South Dakota 1
Alan Cressler:
Little Devil's Tower Trail, Black Elk Wilderness, Black Hills National Forest, Custer County, South Dakota 1
Alan Cressler:
Little Devil's Tower, Custer State Park, view looking west, Custer County, South Dakota 1
Alan Cressler:
Monarda fistulosa, Center Lake, Custer State Park, Custer County, South Dakata 1
Alan Cressler:
Polypodium saximontanum, Black Elk Wilderness, Black Hills National Forest, Pennington County, South Dakota 1
Alan Cressler:
Polypodium saximontanum, Black Elk Wilderness, Black Hills National Forest, Pennington County, South Dakota 2
