Eocho Mountains
this range of mountains surrounded the ancient city of Knossa, in the southern latitudes of the planet Ossus. It was inside the caves that riddled the Eocho Mountains that the ancient Jedi Knights survived the cataclysm of the Great Sith War, although they were forgotten by the Jedi in the aftermath of the battle. It was these Jedi who were the ancestors of the modern Ysanna.