How were the majestic Santa Catalina Mountains formed? What are the rocks we see all over the park? Join experienced geologist Karen to learn about the fascinating geologic history of the Catalinas. This program lasts around 3-4 hours, begins with a geology presentation, and includes a guided walk. Meet at the Picnic Area Ramada.

This event is part of Outdoors250, a celebration of America’s 250th anniversary and Arizona’s natural heritage. By participating in this event, you can enter to win Outdoors250 prizes by signing up at AZStateParks.com/Outdoors250.