There’s more than meets the eye at Oklahoma State Parks. Rare wildlife species are just some of the wonders waiting to be found.Learn More
Keystone Ancient Forest
The Keystone Ancient Forest in northeast Oklahoma has been around for centuries: the oldest tree found in the forest is over 500 years old. 300-year-old post oaks and 500-year-old cedar trees invite visitors into a quiet, uncultivated wilderness. This serene 1,360-acre nature preserve is open on select Saturdays and offers well-maintained primitive hiking trails. Take in the fresh air and the spectacular views from within the forest, which is situated on scenic Keystone Lake. Inhabitants of the Keystone Ancient Forest include deer, American eagles, bobcat, migratory birds and over 80 species of butterflies. No pets are allowed in the forest.