Vithura : Road traffic at 12th Curve on route to Ponmudi has hit halt once again with road there caving in during noon rains on Tuesday. With road chipping off it has become impossible to travel up road from the 12th Curve. Also there are roughly 180 families living in hamlets there, all of who are now isolated. The rains and damage took place even as road works were on and passage of smaller vehicles were kept going.