On August 15, 2018, one cut slope failure happened behind a house  near Kollamula,  with a length of 9 m, width of 21 m and height of 8 m. During the event,  One house belonging to  Rajan, Karakkattu, Thulappally got damaged.   The causative factors of t
the trees on the near vicinity of the crown portion on loose overburden is at risk.
Kollamula slide 2
Kollamula
Unstable debris material on the slide area needs to be removed; a concrete retaining wall with weep holes and lined toe drainage need to be constructed, benching of slope is suggested, trees near the crown portion of the slide needs to be removed.
Unscientific cutting of slope behind the house, increase in pore water pressure and decrease in shear strength of the overburden material rsulted in failure of slope.