Underhive

The Underhive is a vast, lawless underground domain beneath a planet’s surface, often found on worlds with dangerous or collapsed surface environments. It functions as a hidden, gritty world where various factions—criminal guilds, scavengers, and outlaws—operate outside conventional authority. The environment is typically harsh, filled with tunnels, abandoned structures, and treacherous terrain, fostering eternal conflict and survival struggles. The Underhive serves as a backdrop for stories of intrigue, resistance, and barter, offering a contrasting, rugged space below the surface’s more ordered or civilized regions.