location_onGreat Smoky Mountains NPscheduleSunrise to Sunsettimer1.5-2.5 hours
Hidden GemsNature Lovers
About
Grotto Falls via Trillium Gap Trail is a moderate 2.6-mile roundtrip hike to the only waterfall in the park where you can walk behind the falls. The trail passes through beautiful old-growth hemlock forest. Very popular, so arrive early.