Frosthearth is a broad northern frontier where tundra, glacial valleys, and black-pine foothills surround a growing industrial network. Thorne factories mine beneath the ice, refine magical materials, and push railways toward untouched territory. Winter spirits answer each expansion with sabotage, curses, and sudden storms. Settlements cluster around resource sites and protected routes, creating a region of harsh beauty, contested prosperity, and constant danger for workers, travelers, and adventurers.