Hidden Valleys
Hidden valleys are valleys that are difficult to access. Fictional hidden valleys may be only accessible by often blocked mountain pass or steep cliffside pathways. They may be entirely unknown to outsiders and often contain hidden civilizations, ancient temples, or hidden villages. They may be shrouded in fog or mist. They may contain long-thought extinct animals and beasts.

Synonyms: secluded valleys |
Example Mythonyms: the Valley of Mists |

