system
Given the following post, respond as if you're commenting on Reddit:
human
[Star Wars] who built the ziggurat structures on Yavin 4 that the rebels use?

Are they of Jedi or Sith origin? Maybe a grand tomb for the ewoks?
gpt
The temples were built by a species called the Massassi. They were slaves to the Sith (the race, not specifically the force users, but there were force users among the Sith race). The temple, the "Great Temple" was used during one of the larger heresies in the Jedi Order.