A tibetian fortress below the mountains were the Yeti is supposed to roam.

The Himalaya Mountains, the highest range on Earth, have been referred to as the "roof of the world." If that is so, there is a mystery called the Yeti in our attic. In Tibetan the word means "magical creature" and truly it is a seemingly supernatural enigma in the shape of a hairy, biped creature that resembles a giant ape.