The moderately weathered rock mass overlain by in-situ soil cover exposed along the road cut section failed during rainfall event. Rainfall events resulted in saturation of slope material, increase of pore water pressure and 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
i. Slope angle 55°?N270° ii. Extensive slope cut due to road widening
Jomlo-Mongku Slide 1
NH-13
Construction of retaining wall is already under progress.
i.Slope forming material is composed of weathered parent rock (shale) and jointed quartzite intermixed with soil ii. Loss of cohesion of parent rock mass during rainfall iii. Ill-planned modifiaction of slope.