Perumthenaruvi which literally means honey river, is a picturesque tourist spot situated in Vechoochira Panchayath in Ranni Taluk, about 36 km from Pathanamthitta. One can reach Perumthenaruvi either through the Pathanamthitta-Ranni route or the Kottayam-Erumely route. It is a favourite picnic spot among the tourists, with an awesome view of water cascading from a rocky path at a height of 60 to 100 ft. Perhaps, the collection of beehives found near the river side, might have incited the ancestors to name the river as Perunthenaruvi.