What can visitors do at the Devonian Fossil Gorge near Iowa City?

Visitors to the Devonian Fossil Gorge near Iowa City can walk the self-guided tour along an ancient seabed, which was an ocean floor 375 million years ago. This site was an ocean long before dinosaurs existed, meaning visitors can spot some seriously ancient fossils preserved in the rock. A convenient roadside stop makes for easy access—just be sure to follow all rules to avoid damaging or excavating preserved fossils in the limestone rock formations.