An ancient script, referred to as the old tongue by Ahsoka Tano, was used by practitioners of the Force, both light and dark, long before the Age of the Empire. Inside the old Jedi Temple of Lothal, the walls were covered in inscriptions using that script. Similar inscriptions could be found on the base of the Sith temple on Malachor, in the tomb of Darth Bane on Moraband, on a shrine in memory of Robbs Ely near Maz Kanata's castle on Takodana and on many of the Massassi ruins on Yavin 4, and hieroglyphics at the under the Jedi Temple in Ashas Ree.
The ancient script seen in the Jedi Temple of Lothal is derived from a drawing Ralph McQuarrie made for the 1995 Star Wars Legends reference book The Illustrated Star Wars Universe. In the context of that book, the Massassi script was etched inside the Temple of the Blueleaf Cluster, one of the many Massassi temples located on Yavin 4. The script also makes an appearance in the Star Wars Legends video game Star Wars: The Old Republic: Knights of the Eternal Throne in the "Jedi Under Siege" expansion on Ossus.
- Star Wars Rebels: Visual Guide: Epic Battles