• Wind Cave National Park - Two Worlds

    Wind Cave

    National Park South Dakota

Wind Cave Room - Crocodile Walk

Stan Allison examines mud cracks in the Crocodile Walk
Stan Allison examines mud cracks in the Crocodile Walk
NPS Photo
 

On September 28, 1991, Jim Nepstad, Stan Allison, Paul Burger, and Mike Wiles found this passage of calcified mud cracks that resemble the skin of a crocodile.

Did You Know?

White Penstemon

White Penstemon is the most widespread penstemon or beardtongue in the Great Plains. The insides of the blossoms are bearded and often spotted with purple. More...