Yavin

Yavin is a gas giant planet in the Outer Rim Territory star system of the same name. Numerous moons orbit the planet, including the fourth moon, which once served as the location of a hidden Rebel base. This lush, tropical moon features the extensive ruins of a now-dead civilization called the Massassi. The Rebels established a base in one of the massive temples, and it was from this location that they launched their desperate assault on the Death Star battle station. The resulting combat has come to be known as the Battle of Yavin.

Yavin Four is also the site of the Lost City of the Jedi, an ancient city built long ago by Jedi Knights deep below the surface of the moon. Droids have cared for the city and its hidden secrets for untold ages. The young Jedi Prince named Ken was found there shortly after the Battle of Endor.

Today, Yavin Four is the home to Luke Skywalker's Jedi Praxeum, his academy for training young Jedi in the ways of the Force.