Greypeak Mountains

A mountain range east of Waterdeep where Xanathar kept his secret lair. The New Leaves tracked him here with maps from his old hideout, passed through a nomad mountain-dwarf clan intoxicated by delirium, and helped the clan reclaim its village from an elder dragon before entering Xanathar's dungeon. On their descent, the banished elder dragon returned for revenge — and kenku riding an infernal machine delivered Bambara's dimensional shackles to Arahna.