Shutterstock
It’s Earth’s second rarest landform
Western Iowa hides something that exists in only one other place on the planet.
Preparation Canyon State Park sits on 344 acres of the Loess Hills in Monona County, near the tiny town of Moorhead. The hills formed from wind-blown glacial silt piled up to 200 feet deep over thousands of years.
The only comparable formations are in China’s Shaanxi province…