The rock slide occurred in highly weathered quartzite which is dissected by 3 sets of joints. During heavy rainfall the water percolated through the joints resulting in weathering and widening of the joint planes causing failure.
Anicia K.S., Arvind Kumar Singh, 2022, Remote Sensing based Macro-scale (1:50,000) landslide susceptibility mapping in TS no. 82 P/12, 15, 16; 91 C/3, 4, 7, 8, 12; 91 D/1, 2, 3, 4, 5, 6, 8, 9 and 10 covering parts of Lower Dibang Valley, Lohit, Anjaw and
NIL
 From Roing 37.12 kms along NH-313 towards Mayudia Pass
 NH-313 (Roing-Anini road)
Removal of loose rock blocks from slope face.
Presence of three sets of joints in highly weathered quartzite and rainfall are the main causative factors for triggering of the slide.