A great ice age occurred on the planet Csilla[2] around 5000 BBY.[1]
Sources[]
"The University of Sanbra Guide to Intelligent Life: The Chiss" — Star Wars Gamer 5 (First mentioned)
- Alien Anthology
- The Official Star Wars Fact File 137 (CHI2, Chiss)
- The Complete Star Wars Encyclopedia, Vol. I ("Csilla")
- The Essential Atlas (First identified as great ice age)
- The Unknown Regions