Thrullmere is a deep, misty lake, risen by the Grey Sorcerer, to drown the village of Pagea centuries ago. It is said that at low tide the tips of the chapel and bell tower of Pagea can be seen poking up above the surface of the lake. Eastwards from Thrullmere, the river Callieton runs towards Parrius, while to the west it leads towards the Silverlight, the Leithe and Mercinae. Off the north of Thrullmere runs the river Timmin, up towards the village of Eleuthera and into the mountains. This is the only route towards the far north central mountains of Avalon, to the village of Archangel and its sparkling crystal mines.