Piney Falls State Natural Area is a protected area near Grandview, just north of Spring City. (Note that Piney Creek Falls is a different waterfall, located in Fall Creek Falls State Park near Pikeville.) The protected area preserves a stretch of Little Piney Creek with two significant waterfalls. The trail starts at the parking lot and in about a half-mile, there is a split. Right goes to the top of Upper Piney Falls. It's possible to rock-hop the creek and loop around to the base, but the water level was too high when we visited. A slip off an 80-foot waterfall would not end well. So instead, we went left at the intersection and in a short ways came to another split (with a sign). To the left, leads down to the top of Lower Piney Falls. It's a 40-foot waterfall, but there's no good way to see it from the top. My wife and I explored a bit, but couldn't find any way to get down to the base - the surrounding cliffs were just too steep. I think you would need ropes to get down. Back at the second split, we went right and followed the creek upstream to the base of Upper Piney Falls. This 80-foot waterfall is very impressive. You can walk behind the waterfall and meet up with the trail that came down from the base. It was really wet with spray so we didn't bother. I'd like to return and try to get to the base of Lower Piney Falls, but even without doing that, this is a great spot for a short hike (total distance is about 2 miles) to see two nice waterfalls.