Yal-Tengri
From Forgotten Realms Wiki
The Yal-Tengri, also known as the Great Ice Sea, is a frozen sea located in the Hordelands. The sea is covered in a sheet of ice for half of the year, but during the spring it begins to thaw while retaining some icebergs until summer when it si completely free from ice. This causes very dangerous sea routes for sailors and other sea-faring folk. [1]
