In the northern regions of Spain, fair xanas dwell in hidden caves near waterfalls and springs, guarded by a great cuelebre. Her cave is filled with the treasures and relics of the great old moros, fairy giants who once ruled Asturias until they were forced into hiding in the spirit realm.
The xana gives birth to young spirits called xaninos. When a xanin is born, the xana wanders from her cave, seeking a human infant to swap with her own. The human mother is left to raise a cursed xanin while, unbeknownst to her, her child is taken away to live amongst the fair spirits and hidden things.
Victoria Clough 