Montral was a word used by the Togruta to refer to the hollow horns atop their heads. The Togruta possessed a form of passive echolocation by means of their hollow montrals which allowed them to sense the proximity and movement of physical objects around them.
- Attack of the Clones: The Visual Dictionary (First identified as Montral)
- Star Wars: The Complete Visual Dictionary
- The Official Star Wars Fact File 74 (SHA1-2, Shaak Ti)
- The Complete Star Wars Encyclopedia