evidence: Raising a question mark on the construction of big hydro power projects in upper Kinnaur district in Himachal Pradesh, a recent study has revealed that a majority of hydro power projects proposed, under investigation, construction and consideration in Kinnaur district are between the main central thrust that passes through Shongtong Bridge, and the Himalayan crest, the region which has several active faults like kaurik fault, Spiti Valley fault, Guimal fault, Syarma fault and witnesses micro seismic events.