Also known as Rat Tail Falls, the Thalaiyar Falls is the highest waterfall in the state of Tamil Nadu. Gushing down from the slopes of the verdant Palani Hills in Dindigul District, Thalaiyar Falls is situated around 40 kilometres from Kodaikanal. Furthermore, this mesmerising waterfall can be spotted across the entire valley. From faraway places, you can see Thalaiyar Falls as a thin silver strip of water freefalling with the lush green mountains and dark rocks making for a scenic backdrop. Moreover, when looking at it, the falls seems like the tail of a rat, long and thin. In addition to being the highest waterfall, it is also among the widest of all waterfalls in the area, ranging from 13 kilometres on the Batlagundu-Kodaikanal Ghat Road to Kodaikanal. From trekking and hiking, to photography, there is a lot one can do on their visit to Thalaiyar Falls.Visitors can also enjoy the beauty of the falls from the roadside benches, simply soaking in the great atmosphere. Moreover, there are two walls here on the falls, where a huge flat rock rests below one of them. Tourists can get down to the rock’s edge and get a great look of the river at the bottom which flows silently into the woods.The falls also serves as a watering hole, attracting many animals for drinking water. Even though it is said that the water of Thalaiyar Falls, which comes from the Perumal Malai village through a 9-kilometre downstream is clear, tourists visiting the falls are recommended not to drink it.