The confluence of the Rishimala, Pasukidamettu and Ramakkalteri Rivers on the peninsula of the country gives rise to the breathtaking Achankovil River. The river originates from the hills of Achankovil in the Pathanamthitta, from where it flows through Mavelikkara, Thiruvalla and Karthikapally Taluk into the left of river Pamba, which lies near the Vembanattu Lake. Also known as Achankovilaaru, the river is about 128 kilometres long and is brimming with flora and fauna on its either bank. The river is a scenic spot that tourists especially love to visit to enjoy the splendid views of nature.
The word Achan Kovil means the shrine of Achan, or in other words, the shrine of the Supreme Deity. One can thus find numerous ancient temples and religious places of great importance along the river route, such as Pandalam, which is considered to be the native place of Lord Ayyappa. The presence of these temples has dramatically served to enhance the popularity of the Achankovil River since tourists who visit the area get to witness not only some picturesque views but also to seek blessings from the Almighty and pray for their loved ones. The tranquillity and serenity that the place offers make it one of the most famous and loved tourist spot in all of Kerala. Besides, Edappon, a spot famous for its flora and fauna, also lies on the banks of the river, and this haven is also a must visit place.