Geode State Park Professional Guide
Detailed Trail Description from our Guidebook
"Take a creek walk in Geode State Park, named for Iowa’s state rock, and you may find several of the beautiful stones—but it’s illegal to take them home with you. Early spring and summer are the best times to visit, when wildflowers blanket the forest floor and migratory ducks find themselves at home.A 7.0-mile trail around the lake drops in and out of small ravines and is popular with hikers and bikers.
Geode comes from “geoides,” the Latin word for “earthlike,” and some exceptionally beautiful specimens can be found within a 35-mile radius of Keokuk, Iowa. Located in tributary valleys of the Des Moines River, geodes are spherical rocks with usually hollow cavities lined with mineral crystals. World-famous Keokuk geodes originated in the clays of the Mississippian seafloor, around 340 million years ago. Their enigmatic formation validates how unique they are."