The shallow rotational soil slide occurred due to the unplanned modification of slope for road construction/ widening. Here regolith thickness is more than 5m. Also damp hydrological condition increases the saturation of overburden hence loss of cohesion
Nair,V,Athira., Jamir, I., 2022, Remote Sensing based Macro-scale (1:50,000) landslide susceptibility mapping in Toposheets82L/16, 82P/1,2,3,4,5,6 ; 83I/13,14 & 83M/01 covering  parts of West Siang East Siang, Upper Siang, Dibang Valley and Lower Dibang
Mettalled Road
NH-13 Slide 5
NH-13
1.Proper diversion of surface water run-off from the aafected slope face.2. Already constructed retaining wall/partially damaged can be again constructed/modified with sufficient weep holes.
1.Regolith thickness is more than 5m. 2.Damp hydrological condition.3.Drainage dissection on the affected slope.4.Saturation and overburden  and loss of cohesion during rainfall.