What is the name of Maleficent's castle mountain?

Maleficent’s castle mountain is called the Forbidden Mountain in Disney’s 1959 Sleeping Beauty.

The Forbidden Mountain is Maleficent’s remote stronghold, a dark, jagged landscape that visually contrasts with the bright medieval kingdom ruled by King Stefan. She resides there with her raven, Diablo, and a group of bumbling goons. The setting establishes her as a powerful figure operating outside the kingdom’s ordinary world.

After Aurora’s curse takes effect, Maleficent reveals Aurora’s identity to Prince Phillip from the Forbidden Mountain. She then captures him and plans to keep him imprisoned until he is an old man, while Aurora remains unchanged under the spell. The three good fairies eventually rescue Phillip from the mountain and arm him for the final confrontation.

The name is occasionally confused with names from other fantasy stories, such as Mount Doom from The Lord of the Rings. “Forbidden Mountain” belongs specifically to the 1959 Disney film. Some references use the plural “Forbidden Mountains,” but the film’s plot description commonly identifies Maleficent’s domain as the Forbidden Mountain.