Lake Marrow sits nestled within the cloud-piercing Spine of Stars. Despite the biting winds and perpetual snow of the surrounding peaks, the lake's obsidian waters remain unnaturally warm and liquid. This mythic site attracts pilgrims, mages, and outcasts who believe the basin is a portal to the underworld. The atmosphere is heavy with the scent of ozone and ancient magic, where the boundaries between planes feel dangerously thin and unpredictable.