||This article may require cleanup to meet Wikipedia's quality standards. (January 2010)|
|This article does not cite any references or sources. (January 2010)|
Periyar flows through a narrow gorge between two tall hills (known as Kuravan and Kurathi). Kuravan means a tribal and Kurathi his spouse and mala meaning mountain. These two hills have been joined to form the biggest dam in the state which is five hundred and fifty feet in height and six hundred and fifty feet in width.