Visit the Neergarh Waterfall just after monsoon season and you will not only witness water cascading thousands of feet from the mountain apex, but you will find yourself walking amidst thousands of brightly colored butterflies.
There are wading pools along the hike where a weary hiker can sit serenely and soak tired feet...or if you are feeling intrepid, you can strip to your skivvies and stand under the raging water, allowing it to wash away your sweat and your troubles. (But ladies, be warned. It's India, so modesty while wading is prudent.)
Local vendors are on site to sell you a masala chai for 15 rupees to help you warm up after a dip in the crisp, clean water.