Grythsorin, the most expansive canyon system on the world of Ebra, was also the site of lu-ramin extraction sites. In the era of Imperial control over Ebra, these extraction sites functioned as forced labor camps for Ebranite political inmates.
- Galaxy Guide 12: Aliens — Enemies and Allies (First mentioned)
- " Cracken's Rebel Operatives " — Star Wars Adventure Journal 11