Round Spring Cave and River Trail is a standout hiking destination in Eminence, MO, covering 1.5 miles with 200ft of elevation change. Stats: 1.5 miles, 200ft gain, Easy. Type: Out-and-Back. Surface: Rocky. Time: 1 hour. Fee: $7/person (cave). Dogs: Yes, on leash. Permit: No. Wildlife: bats, deer, herons. Best seasons: Current River valley cave and spring. Pack water, layers, and appropriate footwear. Conditions vary across MO. Leave No Trace: stay on trail, pack out all waste, respect wildlife.