In the books
In the A Song of Ice and Fire novels, the Skirling Pass is named for the keening sound the wind makes as it blows through it. The pass has been a travelling and trading route for millennia. An ancient stone archway is located at the top of the pass. A large glacier and a frozen lake are located at either side of a hidden valley near the top of the pass, where Mance Rayder's army made camp.