It had a magnitude of 6.8 on the surface wave Attack magnitude scale and a maximum perceived Know intensity of IX ( `` Violent '' ) on the Mercalli intensity scale , causing Causation extensive damage Damaging in Himachal Pradesh , in northern India .

Its epicentre was in Kinnaur district in the southeastern part of Himachal Pradesh and caused Causation 47 casualties Death .

The earthquake Catastrophe affected many monasteries and buildings in the state and led to Causation an extensive restoration Building work in the late 1970s and early 1980s in Himachal Pradesh .