Moved on, but waiting? Or they did wait. It's possible. [And probable. There is one thought that comes to mind, especially as Inui had made a point about it.] But whoever they were, they may have perished regardless. This planet doesn't seem to be very welcoming, and they did little to salvage what had been left behind.

[The hull is in bad shape, so maybe they did salvage it, but it looked like it was left to be a grave, forgotten years and years ago. It's haunting.

Though incredibly likely as the source of their arrival.]

If we were meant to travel, do you think there would be someone made aware of our awakening?