Vazhvanthol Waterfalls is a seasonal waterfall in the western ghats near Kerala and Tamil Nadu border. If you have Ponmudi, a hill station near Agasthiyamalai in your itinerary, you can easily cover this place. The trekking to waterfalls is permitted only from 9.00 AM to 1.00 PM. They allow people only in batches with forest guide. You will find this trekking an amazing experience and can spot snakes, leeches and other small wild animals. The breeze from Agasthiyamalai will be refreshing.