Piringiisi, which meant "healing lava", was a subterranean resort city on the planet of Sullust, famous for its hot springs and mud baths. Vacationers from across the galaxy would visit the resort, to relax and bathe themselves in the hot springs and therapeutic green mud. With private bathing pools as well as massage and other relaxation treatments, visitors of the Piringiisi resort could let their fatigues be whisked away—nearly literally. Though the exact composition of the Piringiisi green mud was a well-kept secret, those who spent even a little time in and around the mud found themselves relaxed, even rejuvenated if they stayed overnight.
- X-Wing: The Official Strategy Guide
- X-wing Collector's CD-ROM: The Official Strategy Guide
- The Essential Guide to Planets and Moons
- Geonosis and the Outer Rim Worlds
- Star Wars: Empire at War: Forces of Corruption: Prima Official Game Guide
- The Complete Star Wars Encyclopedia
- Strongholds of Resistance