Theophilus, P.K. and Megotsohe Chasie, 2014. Updation of existing landslide inventory of North Eastern Region. GSI, RHQ, NER, Shillong,  Item Code: SER/NER/RHQ/2013/030; Unpub. GSI Report of FS 2013-2014
Earlier workers have indicated the presence of localized faults along the Lalpani as well as the Arroha nala. Road bench cutting (5-6 road bench level) along the affected slope observed.
Lalpani slide
Tezu-Hayuliang road
Weak geological formation (garnetiferous schist), severe toe erosion as well as bank erosion by the Lalpani river, overstressing by contruction of a zig-zag road consisting of 5-6 road benches along the distressed slope face.