• Wind Cave National Park - Two Worlds

    Wind Cave

    National Park South Dakota

Birds - Barn Swallow

Barn Swallow - Hirundo rustica
Barn Swallow - Hirundo rustica
 

Did You Know?

A picture of Alvin McDonald in his caving hat.

Alvin McDonald was the first systematic explorer of Wind Cave. He explored the cave from 1890 until his death in 1893. More...