Underground Dwarven city, intricately carved stone walls, grand arches, ornate lanterns, bustling marketplace, sturdy dwarf merchants, bearded craftsmen, leather aprons, pickaxes, gemstones, glittering treasures, ancient artifacts, mysterious runes, steam-powered machinery, copper pipes, dimly lit tunnels, narrow bridges over chasms, stalactites, majestic underground waterfall, misty atmosphere, warm glow of luminescent mushrooms, richly textured stone floors.