Wind Cave National Park Keychain

Sport your favourite National Park in style with great souvenir shirts, hats, mugs, stickers and gifts from SnapTees. Wind Cave NP Established in 1903 in South Dakota is distinctive for its calcite fin formations called boxwork & needle-like growths called frostwork. The cave, which was discovered by the sound of wind coming from a hole in the ground, is the world's densest cave system. Above ground is a mixed-grass prairie with animals such as bison, black-footed ferrets, and prairie dog Great gifts for the whole family!