She tells you that at one point - thousands of years before - the planet had been a lush jungle planet, dotted with many active volcanoes. There also had supposedly been some sort of Sith stronghold there. Obviously she doesn't know what they were up to there; no one knows, but rumor has it there were some pretty heavy-duty experiments going on. All life on the planet was wiped out when several of the volcanoes erupted at once.
No one really goes there, and the few people who know where it is tend to avoid it, because there are rumors it's haunted.