It is an old slide cone. Heavy rain  and percolation of surface run-off through the cracks saturated the porous overburden mass and removal of fines through piping action caused differential settlement.

An Interim Report on Preliminary  Geological  Slope Stability Assessment of the Recent Disaster Affected Areas in Parts of Chamoli District, Uttarakhand by Bhupendra Singh, Bhupender Singh, Ajay Kumar and Arindam Roy, Senior Geologists, M-IV, NR GSI Dehr
UK_CHA_NH_ 013
About 1.5 km ENE of Rinni Village.
Lined drains for surface run off, training of small nala from higher elevation, road to be levelled by proper compaction.
Heavy precipitation and percolation of surface run-off into the cracks,  saturation of the overburden mass.