This is the best ecotourism spot in Kerala. This is also one of the safest tourism spot. This tourist spot offers us a wide variety of features like lake boating, rope bridge, trekking, mountaineering, biking etc.Thenmala is situated on Kollam district, Kerala. The thenmala dam is also very famous in Kerala.Thenmala attracts a large number of foreign and domestic tourists. The Palaruvi waterfalls is also located near by the Thenmala.