Kogaion

Kogaion was the mythical holy mountain of the Dacians, the place where Zalmoxis stayed in a underground cave for three years.

Based on the Indo-european roots of the Dacian language, it is usually translated as the "hidden mountain".

It's localization is still under debate, but thought to be either the in the area around the Dacian capital Sarmisegetusa or the Ceahlau mountain.

See Kogaionon for the mammal genus from the Upper Cretaceous