A debris avalanche occurred at NNW flank of the Vathidudi Kunnu in the Periyar valley about 500m south of the confluence Chinnar Todu and Periyar River, Vathikudi village. A horrifying sound is reported to have accompanied the avalanche. Average slope of
Report on the recent Landslides in Thodupuzha, Udumbanchola and Devikulam Taluks, Idukki district, Kerala, by C. Muraleedharan, Senior Geologists & M.P. Muraleedharan, Director (SG) Thiruvananthapuram. (LHIM_KER_2007_006)
Huge dislodged boulders of 1cum size in the zone of accumulation
Periyar valley
Vathikkudi
Afforestation
Excess pore water pressure