Fiery Gizzard is rated as one of the toughest trails in the South. It is located in the Grundy Forest State Natural Area near Tracy City, TN. This trail is one of the most diverse and beautiful in the state and has been ranked as one of the top twenty-five backpacking trails in the U. S. by Backpacker magazine. We hiked about 12 miles to Raven's Point and back with our BSA Troop and it was memorable. The gorge part offers waterfalls and some of the coolest rock formations I have ever seen. I highly recommend it!