Mirabar is the richest city of the North by far. It sits atop a knoll on the north side of the Mirar River like an unassailable fortress, enclosed on all sides by sloped outer walls as wide at the base as many city blocks in Waterdeep. Defenders can fire arrows down from atop the walls, or, in winter, pour water down them to make ice slides. There is no shortage of stone and weaponry. Even the docks have battlements and fortifications. Visitors to Mirabar often wonder why they don't see more dwarves, as humans make up the majority of the city's surface dwellers. Another city lies just below the surface, and that place is dominated by dwarves. Underground, Mirabar is a city of lit residential caverns, superheated forges, foundries that operate day and night, and tunnels leading to the mines.