St. Marks River Preserve State Park is a scenic, undeveloped natural area along the headwaters of the St. Marks River. Visitors can explore trails for hiking, horseback riding, and off-road biking through pine forests, hardwood thickets, and diverse wildlife habitats. While the river isn’t navigable here, the park offers a peaceful retreat with chances to spot deer, turkey, foxes, and songbirds. There are no on-site amenities, so visitors should bring their own water and supplies.