The Sîresha rose in the Tûr Betark, in the mighty Kiraskon Ravine, south of Ny Chennacatt, secret fortress of the Storm King. Meltwater from two glaciers, as well as the torrential rains falling on the mountain peaks, fed its upper reaches to create a fast- moving current. The yellowish color of the water was due to the yellow sediment or loess eroded from the cliffs of the Tûr Betark.