Sky is the third waycastle defending the Eyrie, seat of House Arryn, and the last line of the castle's defense following the Gates of the Moon and the waycastles Stone and Snow.
The path to Sky is treacherous. It is open to the wind and the steps are cracked and broken from the constant freezing. Sky is a high, crescent-shaped wall of unmortared stone raised against the side of the Giant's Lance. Inside the walls are a series of ramps and a great tumble of boulders and stones of all sizes, ready to throw down or even cause a minor avalanche. There is a cavern containing a long natural hall, barracks, stables for mules, and supplies. Handholds carved into the rock lead to the Eyrie, while earthen ramps give access to the walls. The Eyrie, located six hundred feet above, can be reached by Sky's handholds in the rocky chimney which lead to the castle's undercellar, or by taking wicker baskets and oaken supply buckets pulled by chain winches.
Queen Sharra Arryn tripled the size of the garrisons in Stone, Snow, and Sky in preparation for the imminent march of the Targaryen forces against the Vale of Arryn during Aegon's Conquest.
A Game of Thrones
Catelyn Stark and Tyrion Lannister stop at Sky while traveling to the Eyrie.
A Feast for Crows
Sansa Stark and Lord Robert Arryn travel to Sky from the Eyrie via the wooden baskets.
- ↑ 1.0 1.1 1.2 1.3 A Game of Thrones, Chapter 34, Catelyn VI.
- ↑ 2.0 2.1 A Feast for Crows, Chapter 23, Alayne I.
- ↑ 3.0 3.1 A Feast for Crows, Chapter 41, Alayne II.
- ↑ Fire & Blood, Aegon's Conquest.