Siruvani Dam, Kerala
Started from Mannarkad.
Also you can go via Kanjirappuzha dam site, then to Palakkayam....
Please opt a bike ride on a rainy day, this will give a such a thrilling experience, u cannot experience the same if you opt a four wheeler.
Tips: You cannot go after Kerala Check post, they provide you van, please book in advance(reach divisional forest office, please see my snap for numbers) if you really wish to have a safari around dam site and through forest.
Route: Mannarkkad -> Palakkad Highway, take a left to siruvani road(land mark St Johns orthodox Church), u can also see Kerala tourism development's green color sign board. You will reach Palakkayam town then to Siruvani dense forest.
Route Map( Mannarkkad-towards palakkad take left at St.johns orthodox Church->Palakkayam->Siruvani)
More info please visit: