Charon's Garden Wilderness Loop offers a memorable hiking experience in Wichita Mountains Wildlife Refuge, OK. Covering 6.0 miles with 800 feet of elevation change, this hard trail showcases Oklahoma's varied landscapes. Trail specs: 6.0 miles, 800ft elevation gain, Hard difficulty. Type: Loop. Surface: Rocky. Time: 4-5 hours. Fee: Free. Dogs: No. Permit: No. Wildlife sightings include bison, elk, coyotes, prairie dogs. Oklahoma's diverse ecosystems support a surprising range of species. Best times: Spring and fall; dramatic granite boulders. Gear up with sturdy footwear, plenty of water, and sun protection. Oklahoma weather can shift quickly—check forecasts before heading out. Follow Leave No Trace principles: carry out all trash, stay on marked trails, and respect wildlife and other visitors.