Kaluthin was a wavy, grass-like plant created by Darth Rivan to modify the poisonous atmosphere and climate of Almas. Its stalk was green, and its leaves were purple in the center, but turned to green on the edges. The stalk was also covered in white patches of phosphorous deposits which glowed. As Almas was completely covered in the plant (except for Rivan's Sith fortress area, where nothing alive could thrive), this caused the planet to emit its own gentle light, described as an aura.