This area is full of history. In 1916, the state of Iowa purchased the first 47.5 acres (192,000 m2) for use as a quarry, but later transferred the area to the Board of Conservation.The area was initially classified as a state park, and later a "preserve." It was formally dedicated as a geological, archaeological, historical, and biological preserve in 1969. The preserve was named for the creator spirit in Anishinaabe Indian tradition, Gichi-Manidoo (literally "Great Spirit" or "Great Force of Nature"). The smooth, pink-colored bedrock is the oldest exposed rock in the state, and it is haunted.
Now find that cache.