Formation of the Loess Hills | Iowa Science Phenomena

What makes the Loess Hills of Iowa a unique landscape is the depth of the loess soil. Only one other location in the world, near the Yellow River in China, has loess deposits greater than the 100 to 200 foot depths in the Loess Hills of Iowa. Endangered animals and rare prairie grasses can be found on these lands. Experience some of the history and natural wonders of the Hitchcock Nature Center, set in the rolling Loess Hills in Pottawattamie County.