Idukki Arch Dam Viewpoint.
The Idukki Arch Dam (168.91m, Asia's highest arch dam) is a Kerala State Electricity Board restricted-access reservoir — public visit requires advance KSEB permit issued at the Painavu district office, 9am-3pm weekdays. The viewpoint is on the Cheruthoni side, accessed via a 2.5km approach road that the KSEB security gate filters. Most Munnar-Thekkady packages skip Idukki district HQ entirely.WHY NOBODY KNOWS
A 168.91m double-curvature arch dam on the Periyar river — Asia's highest arch dam and the third-highest in the world, built 1969-1976 by Canadian engineers under SNC Lavalin. Public viewing platform on the Cheruthoni side. Permit ₹50 Indians, ₹250 foreigners (free for Indian schoolchildren). Open only Sundays, Sept-March (closed monsoon). Best at 10-11am for dam-spillway photography.
