crown cracks were seen at top which may cause reactivation of slide, if untreated
Mazhuvannur slide
Mazhuvannur
Benching of slope following proper bench height, construction of concrete retaining wall with weep holes and lined toe drainage, treatment of crown crack by proper sealing material like bentonite clay
Increase in pore water pressure and decrease in shear strength of the overburden material  due to heavy rainfall for prolonged period, unscientific cutting of slope behind the house