The slope forming material comprised  fragmented shale and siltstone which got oversaturated during torrential rainfall and due to pore water pressure, it lost the cohesion and failure occurred. Also the affected area is drained by  natural stream.
Tep, Y. and Kumar, A. (2018); MacroScale (1:50,000) Landslide Susceptibility Mapping in Toposheet nos. 83C/16 and 83H/1 in  Dima Hasao and Cachar districts in Asam and East Jaintia hills  District in  Meghalaya and West and Central MNipur district in MNi
Slide debris covered half of the 4lane highway.
Chhota Kapurchhara1 slide.
NH54
Toe support for the affected slope through construction of strong RCC retaining wall with sufficient weep holes founded on sound substratum.Construction and proper maintenance of concrete road side drain. The road side drain should be of sufficient width
Oversaturation of slope forming material and increase in local pore water pressure during torrential rainfall. Loose of toe support due to extensive slope cut along NH4 and also because of the railway cutting running parallel below the road.Weak litholog