The affected site comprises highly weathered fragmented and friable sandstone overlain by thin insitu soil cover. Extensive slope excavation beyond the critical angle and toe removal of natural slope having weak slope forming material played a major role
Lemdur, K. and Kikon, A. (2018); MacroScale (1:50,000) Landslide Susceptibility Mapping in Toposheet nos. 83G/6 and 83G/7 in Karbi Anglong and Dima Hasao districts in Asam, Kohima District of NGaland and West MNipur distrcit of MNipur. GSI report of FS 2
PhaiphaΓÇôDigarkaro road section is prone to landslides especially during monsoon season.
Digarkaro Phaipha Slide No.2
Digarkaro–Phaipha road section.
1. Moderation/Easing of slope.
2. Construction and timely maintenance of hillside lateral drains.

Destabilization of slope by modification of slope face and toe removal for road construction, weak slope forming material, decrease in shear strength of slope material due to oversaturation are the main causes that contributed to slope failure.