Golrath Station
this was the name of the abandoned magma smelting plant used by the Alliance as a temporary base, in the wake of the Battle of Hoth. Unknown to the Alliance, the strange rocks which were used to build the station could, when heated, hold light rays within their structure. Thus, acting like holographic recorders, the rock managed to store information about the location of many of the Alliance's bases. It was eventually destroyed by Imperial Admiral Giel, who triggered the reactor overload which would destroy Golrath Station as part of an improvised plan to capture Leia Organa. Leia managed to escape, as did the rest of the Alliance team, leaving Giel once again without any information to return to Lord Vader.