The shallow rotational debris slide occurred due to weak SFM is unstable along the extensive slope cut during rainfall.
Ramesh Guguloth, Neethu Alpho Joseph, 2022, Remote Sensing based Macro-scale (1:50,000) landslide susceptibility mapping in Toposheets 83M/4, 8,12,15,16; 83N/01, 2, 5, 6, 9,13; 92A/03, 4, 6, 7, 11,14,15,16; 92E/02, 3 & 4 covering  parts of Tirap, Changan
NIL
1.5 km SE of Lanwang
Khonsa-Changlang road, NH-215
1. Removal of the dislodged boulder resting on the slope in planned manner, 2. Construction of retaining concrete wall upto 2-3m height with weep holes and lined toe drain all along the affected road stretch
1. Extensive slope cutting for road construction 2. Slope forming material is weathered intercalation of siltstone, shale and sandstone of Disang Group. This makes the SFM unstable along extensive slope cut during rainfall