Wind Cave National Park
Price: £4.99 (£4.16 exc. VAT)
Size: 7.7 MB
EAN: 5055351154464
Credits: USGS
Approx US$6.39
USGS National Park - Wind Cave
Wind Cave is distinctive for its calcite fin formations called boxwork and 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.