The route is well marked with bottles and ribbons so chances of getting lost are very low.
Trek
After 1 hour of descent you will reach the waterfall. It have 2 caves providing the shelter for approx 100 people. You can't goo to the lower cave if the force is high.
Swimming
Swim in the freezing water. Enjoy. Also there are 3-4 food stalls available on the way. Don't litter the place and carry the waste with you while returning.