What an awesome hike. Went up to the Forks and had lunch on a perfect day: clear, sunny, mild temps. This is not just a destination hike to a waterfall or a high point. Rather, one is immersed in granduer from start to finish. From the first step off the boat, the trail leads by a roaring creek up a short distance to Hidden Falls (aptly named). Then it crosses the footbridge and begins the 300 ft climb up to Inspiration Point on a jagged trail blasted into the rock face. For the next 4 miles up to the Forks, the trail is uniformly graded and easy to walk, free of the normal clutter of rocks and roots. The crowd drops about 80% as well past the Point. After the 1st mile through forest, the trail opens up to a spectacular valley with gentle stream, cool ponds (and moose!) and the mountails rising 4,000 feet on both sides. The trail gets its name from the awesome cascades that tumble from the snow fields high on Grand Teton into the valley. Just before reaching the Forks, the trail crosses another footbridge, then climbs another 200 ft to a cool lunch spot by a lovely cascade. If you have time to do only one trail in the park, this is the one.