The Veins of Altoria, also known simply as “the Veins,” is a vast undercity that sprawls beneath the streets of Altoria, hidden from the surface world. This labyrinthine network of ancient tunnels, forgotten ruins, and shadowy passages is a haven for those who prefer to operate outside the law or seek refuge from the city above. The Veins are a place where adventurers, outcasts, and dark dealings converge, with the entrance to the Endless Abyss serving as the district’s ominous heart. The air is damp and heavy with the scent of earth and old stone, and the flickering light of torches casts long shadows along the crumbling walls.

The Veins are a mix of ancient catacombs, collapsed buildings, and purpose-built tunnels that have been expanded and repurposed over the centuries. Stone archways, rough-hewn passages, and hidden chambers are connected by twisting paths that seem to shift and change over time. The district’s structures are haphazardly built, with layers of history evident in the varying styles of masonry. Marketplaces, hideouts, and even small settlements have sprung up in the larger chambers, where merchants and criminals alike conduct business away from prying eyes. The deeper one ventures, the more unstable and treacherous the environment becomes.

The Veins are dark, oppressive, and unsettling. The constant drip of water echoes through the tunnels, and the distant hum of activity suggests that the undercity is never truly empty. Despite its danger, the Veins have a certain allure for those seeking adventure, wealth, or anonymity. The district’s markets are filled with rare goods, magical items, and information for sale, but trust is a rare commodity in a place where betrayal is just another form of currency. The deeper regions are home to creatures and entities that have made the darkness their own, adding an element of supernatural menace to the Veins.

The inhabitants of the Veins are a mix of adventurers, fugitives, smugglers, and those who have no place in the world above. They are tough, resourceful, and often ruthless, having learned to navigate both the physical and social dangers of the undercity. The people here operate by a different set of rules, where power, information, and loyalty are constantly shifting. Despite the grim environment, there are pockets of camaraderie and mutual aid among those who have chosen—or been forced—to make the Veins their home. However, alliances are always tenuous, and survival depends on staying one step ahead of both rivals and the unknown dangers lurking in the shadows.