Elphrona.
The planet existed only in the most obscure records the Sith Eternal had obtained from the archives of the First Order. Kylo Ren had procured its location from Snoke; and, from what Ryder could ascertain, it was a Jedi vault during the High Republic era. Where the Jedi Order stored potentially dangerous treasures away from the prying eyes of Padawan Learners and any other Jedi who might be swayed by the forbidden knowledge within them.
The entrance to the stone-engraved vault had been sealed by an avalanche over one hundred years ago. That was in the records too. Ryder suspected Kylo Ren had caused it, since it was his report to Snoke that survived into record; but also because of the tinge of cold he felt around the rocks. The lingering touch of the dark side. Ryder stretched out a hand and closed his eyes. He imagined the stones floating up into the air and out of his way. His face pinched with the effort of lifting the gargantuan blocks of clay and stone, but they eventually did just that.
The air inside was stale, the way most places were when they remained untouched for so many decades, and the vault was scarred with a century's old battle. The battle that had sealed this place to the galaxy. The battle that had knocked its treasures off their pedestals and left them scattered about the vault's floor. A treasure trove, and one that was likely to make him very popular with the people up top. Or so he hoped. @Nightfall