Ha Ha Tonka Spring Trail is a standout hiking destination in Camdenton, MO, covering 3.0 miles with 400ft of elevation change. Stats: 3.0 miles, 400ft gain, Moderate. Type: Out-and-Back. Surface: Rocky. Time: 1.5 hours. Fee: $5/vehicle. Dogs: Yes, on leash. Permit: No. Wildlife: deer, herons, eagles. Best seasons: Giant cave spring drains into the Lake of the Ozarks. Pack water, layers, and appropriate footwear. Conditions vary across MO. Leave No Trace: stay on trail, pack out all waste, respect wildlife.