Kattadikadavu is one of the best trekking route in Idukki district of Kerala. Its adventurous and trilling trek of almost 3kms. There is no entry fees, but the visit time is 6am to 6pm. Night stays is possible, but it will be on visitors risk.
The location is 30km from Thodupuzha and is in Vannapuram panchayat in Idukki district. You need to walk 2 km from Vannapuram Kallipara junction to reach the viewpoint.
Route: Sabarimala-Kodaikkanal Road, Blathykavala 685607 India
References:
https://www.manoramaonline.com/travel/travel-kerala/2021/04/13/exploring-kattadikadavu-an-offbeat-trekking-destination-in-idukki.html (Malayalam)