The Leyline Aquifers form a vast subterranean network beneath Arcanterra’s arid crust, where crossing leylines merge with tears from the Elemental Plane of Water. Flooded caverns, blue-glass canals, brass siphons, and singing temple chambers sustain distant oases and agricultural belts. The region is both infrastructure and dungeon, crowded with engineers, pilgrims, merchants, salvagers, and guardians who depend on its delicate balance. Sabotage now threatens to transform its life-giving currents into a continental crisis.