First Age
The Misty Mountains were thrown up by the Dark Lord Melkor in the First Age to impede Oromë, one of the Valar who often rode across Middle-earth hunting. The Dwarf-realm of Moria was built in the First Age beneath the midpoint of the mountain range. The two major passes across the mountains were the High Pass or Pass of Imladris near Rivendell, with a higher and a lower route, and the all-year Redhorn Pass further south near Moria.