This rockslide was due to cumulative of three factors (i) favourable rock dip (ii) weathering of rocks and (iii) Slip of the shale layer at the contact with sandstone layer.
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
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Old Kaiphundi2
NH53
Benching of slope.
Weathering of the Rock mass.