this extension of the Silvestri Trace hyperspace lane was formed by the Empire, so that it could bring supplies and workers to the Forest Moon of Endor, during the construction of the second Death Star. Because travel through the Inner Zuma region of the galaxy was dangerous, the Sanctuary Pipeline was built using non-mass S-thread boosters in hyperspace all along the Pipeline, which provided continual information on the next point along the path. Maintenance crews were hired to clear the realspace path of the Pipeline of debris, ensuring that there were no unknown mass shadows being projected into hyperspace. The Sanctuary Pipeline required near-continual maintenance and upkeep, but allowed the Empire to regularly supply the crews working on the second Death Star. After the Battle of Endor, the Sanctuary Pipeline fell into disrepair, as natural disasters and the theft of the S-thread boosters left large portions of it unnavigable.