The slide is a shallow rotational debris slide which is retrogressive in nature caused due to over saturation of weak overburden material during continuous rainfall in the preceding days.
Chasie M. &  Theophilus P.K., 2017: Updation of existing landslide inventory of North Eastern region based on the new incidences as and when occurs during the period, Unpubl. GSI progress report for FS 2016-47
The affected slope is a settlement area and thus effective remedial measures should be planned and initiated at the earliest. Landslide occurred on 22/05/2016
Songpiang-2
Songpiang village, Haflong
1. Construction of retaining wall at the toe and mid of the slope founded on sound sub-stratum may be considered.
2. Channeling of surface drainage system away from the affected slope.
3. Removal of precariously hanging tree to reduce the static loading
The affected area is dominantly covered with weak slope forming material composed mainly of clayey-silt in-situ soil and weathered sandstone. Heavy downpour resulted in over saturation of slope forming material which in turn increased pore water pressure