Loch Tana (an aa spelled T'ana, Amharic: ጣና ሐይቅ</sup></span>, Ṭana Ḥäyq, T’ana Hāyk’; an aulder variant is Tsana, Ge'ez ጻና Ṣānā; whiles cried "Dembiya" efter the region tae the north o the loch) is the soorce o the Blue Nile an is the lairgest loch in Ethiopie.