Olmondo used to be the main city and capital of the planet known as Ruusan.
This city contained black obelisks that featured alien writings on them. It is believed that it was obliterated during the Ruusan campaign as the New Sith Wars concluded.
The Poem of Ages referenced Olmondo, stating that the Bouncers anticipated a Jedi Knight of alien origin who would arrive from the east, spend the night in Olmondo, and then inquire about the Valley of the Jedi.
By the year 1 BBY, the city was completely concealed beneath meters of desert's sand, with only dunes indicating its position. The remains of a road, stretching eastward towards certain caverns, hinted at the city's previous existence.
Driven by curiosity, Morgan Katarn traveled along this road on the Old Codger, and unexpectedly arrived at the dunes above Olmondo; it was that same night that he initially met the Bouncers of Ruusan. It was at this point that Katarn became aware of the prophecy, and to demonstrate its validity, the Bouncers showed him a hidden black obelisk that marked the city's location beneath the dunes. They subsequently reburied it to ensure its protection. Katarn spent the night amongst the dunes with the Bouncers nearby. The following day, he was provided with instructions to reach the Valley of the Jedi.