Vattayar
Munnar-Kochi
Retaining wall with weep holes and suitable filler medium founded on the hard rock should be provided below the road bench. Lined drains has to be provide at the road bench to divert the surface run off away from the road.
Unscientific slope modification for road leaving vertical cut with no lateral support. Absence of roadside drains resulted in surface runoff eroding the filled slope and subsequent failure.