In Twin-Shadowed Knight, it is one in a cluster of Mountains that rise to the west of the village of Sedoc. It towers five thousand feet above sea level, and snow caps its summit irrespective of season. One of the escape routes from the facility in the great subsistence leads here. About a hundred yards from the summit there's an emergency shelter constructed more than a century ago. Mount Zirilla is also home to the Caladoma Snowmen.