kinnaur district's high-altitude highways with rock overhangs or rock shelters in the indian himalayas

highways kinnaur district highaltitude roads rock overhangs shelters indian himalayas landscape scenic nature beauty mountainous terrain picturesque adventure serene remote overhang shelter roadway passageway route tunnel rocky cliffs caves natural erosion geology formations cave entrance mountain road cliffside protective safety canopy arch geological features subterranean transportation infrastructure travel exploration traffic landslide dangerous vehicles district's high-altitude himalayas