Mattupetty Dam, near Munnar in Idukki District, is a storage Concrete Gravity dam built in the mountains of Kerala, India to conserve water for hydroelectricity. It has been a vital source of power yielding along with other such dams, huge revenue to the states was constructed in 1949 and opened on1953

This is a very beautiful place in Munnar, which got its name from natural echo phenomenon situated at a scenic lake bank. When you scream at here, you will be hearing your voice returning to you. Placed at an altitude about 600 ft.

The park which is also known as Rajamalai National Park was a hunting preserve for the British planters and was owned by Rajamalai and Eravikulam during the British rule and then was forked over to Kannan Deven Hills for tea plantation. Later the area was declared as sanctuary with an objective of protecting the indigenous population of Nilgiri Tahr when founded in the year 1975 and was then upgraded as the national park in 1978.