From Halopedia, the Halo wiki
Tolvuus is a continent on Sanghelios. It is home to Achoem Weapons, developers of the Shade turrets, the Type-56 Lich, and the Type-44 Phantom. Five kilometers from Achoem Weapons was the region of Qish'tani, located in the northeast fringes of the continent. Several engagements of the Blooding Years took place on Tolvuus.