A weird discombobulating place that fills the edges around shattered and nascent realities. The Angel of Doors roamed here, as did Sylas and Tala once they found a Door out of the Pale Lands to the Between.
Sylas explained to Esmund, Kaisi, Aureya and Salinger that in S13, due to the Raven Queen disappearing and the Pale Lands being disconnected, souls have gotten stuck on this plane and been sucked away by the White Tower.
Hasn’t been seen post-Breaking yet.