Mountain Realm has been played on NTS in shows including Under Sleepy Moon w/ Yawning Portal, featured first on 18 November 2024. Songs played include A Journey With Old Friends.

Mountain Realm is a Dungeon Synth project from Simon Heath, AKA Atrium Carceri. The Mountain Realm album "Grayshadow Ruins" was the first release on his Cryo Crypt label, a sister label to Cryo Chamber.