In this region there was a long-rumored High Republic Era Jedi chamber, known as the Chamber of Detachment. By 9 BBY, forces of the Galactic Empire had set up an Imperial post and garrisons were stationed along the winding paths leading up the mountain.
Sometime before 9 BBY, prospectors in search of riches established small yet functional homes in the foothills of Prospector's Folly. Indeed, several structures and lifts were established in the area, including technology for prospecting. For instance, a seismic detector that used small pulses to locate small objects, such as priorite deposits, could be found in the Fogged Expanse. Water storage tanks and abandoned prospecting equipment could also be found along the ascent.
At some point, two prospectors, one of which was named Shana, made the dangerous ascent up the mountain. In the Foothill Falls area, the pair were gazing over a waterfall when Shana slipped. Their companion saved them, and the two had to shake off their fear before advancing. In the Fogged Expanse, the two prospectors encountered a mogu, who attacked them, killing Shana in the process. Shana's companion, now alone, doubted that they could finish the ascent without Shana. Nevertheless, they continued their journey, and made it to the Summit Ridge. Grievously tired, they considered their journey, remarking that Shana would have enjoyed the view. The prospector died atop the summit, and their body remained there at least until 9 BBY.
In 9 BBY, Jedi Knight Cal Kestis and his droid companion BD-1 ascended through Prospector's Folly, where they met the Sakavian fisherman Skoova Stev, and encountered a wrecked TIE fighter. Upon reaching the Fogged Expanse, Kestis and BD-1 encountered Imperial Stormtroopers and KX-series security droids. They noticed a recently crashed Lambda-class T-4a shuttle atop a ledge, still burning. As they made their way, they fought a mogu and more Imperial forces before entering the crashed shuttle. While inside, the ship shifted, causing the entire craft to tilt and cutting off their egress with a security droid. Kestis and BD-1 crawled towards the cockpit, leaping across a chasm which split the shuttle. In the cockpit, BD-1 found a component in the flight controls which allowed him to shoot electrodarts. In testing his new ability, the force created caused the cockpit to begin falling off the ledge, sending the body of a deceased Purge Trooper down the cliff side. Kestis used his ascension gun to reach safety before infiltrating the Imperial Post 8L-055. In the main hangar, Kestis encountered significant resistance from Imperial forces, before ascending a lift into the post. He then encountered a Stormtrooper and security droid with controls to a locked door, safe behind 15 centimeters of Imperial-manufactured transperisteel. Kestis used a Jedi mind trick to convince the Stormtrooper to open the door and let him through. Deeper within the facility, Kestis encountered Rick the Door Technician. Kestis then ascended another lift and made his way to the Summit Ridge, which gave he and BD-1 access to the Mountain Observatory.
Also in 9 BBY, Grock, a tradesman and mechanic, was killed in the Mountain Ascent region by Stormtroopers. He had decided to collect a big score, and set out with his partner, Dana, to steal an industrial fuel injector from the mountains, fully aware that other prospectors were too afraid to attempt the action because of the Imperial presence. Grock was caught by the Stormtroopers, but was able to extract the injector before his death, which Dana collected and referred to as her bereavement tax. Upon finding his corpse, she vowed to return and bury him properly.
- The Art of Star Wars Jedi: Survivor