Inside a symbolic mountain

Media reporting sacred chiefs inside of mountains. Often a feature in a Return of the King Story.
e.g. "In the Hall of the Mountain King" (Norwegian: I Dovregubbens hall) is a piece of orchestral music composed by Edvard Grieg in 1875.
The King asleep in mountain (D 1960.2 in Stith Thompson's motif index system)[1] is a prominent folklore motif found in many folktales and legends. Thompson also termed it as the Kyffhäuser type.[2] Some other designations are: king in the mountain, king under the mountain, or sleeping hero.
Examples include the legends of Barbarossa, Kraljevic Marko, Holger Danske, King Arthur, and Charlemagne.[3][4]