​The only planet within Jaolong's habitable zone, Kaukasos was once home to a contingent of the subterranean Siguerans.  Being that it supported life, it most likely had a different type of environment than it has today, which is bleak, desolate desert.
Jaolong is an A8III star with three planets orbiting.  One planet, Kaukasos, exists within the area known as the "habitable zone," the radius around a star upon which human and human-like life may live.  The other two planets are further out from in the solar system, one a gas giant, the other a solid rock of a world.