Corbos was an Outer Rim planet near the Yavin system which was rich in ores. It had "Black Rain Seasons" which saw whole sections of the planet become uninhabitable due to massive thunderstorms.
The Battle of Corbos.
In 6900 BBY it was the site of the Battle of Corbos, the end of the Hundred-Year Darkness. The Dark Jedi lost this battle and abandoned their Force-mutated Leviathans. In the succeeding millennia, every few centuries a group of colonists would attempt to settle Corbos, each time being wiped out by Leviathans, leaving their disappearance a mystery to the galaxy.
In 12 ABY an experimental mining colony of 793 miners and their families established Corbos Mining City, but were also wiped out by Leviathans. In turn, a group of Jedi (Kyp Durron, Dorsk 82, Streen, and Kirana Ti) arrived on the world and put an end to their menace.
Several archaeological teams visited the planet in the following years, but they didn't report any Leviathans. Some of the creatures may have survived underground, but there was no proof. Regardless, colonists and miners continued to avoid the planet.
- "Straight from the Horse's Mouth" — Star Wars Insider 35
- "Around the Galaxy" — Star Wars Galaxy Collector 1
- The Essential Chronology
- A Guide to the Star Wars Universe, Third Edition, Revised and Expanded
- The New Essential Guide to Characters
- The Official Star Wars Fact File115
- Star Wars: The Ultimate Visual Guide
- The New Essential Chronology
- Star Wars: The Comics Companion
- "Heritage of the Sith" — Star Wars Insider 88
- Star Wars: The Ultimate Visual Guide: Special Edition
- Jedi vs. Sith: The Essential Guide to the Force
- The Complete Star Wars Encyclopedia
- The Journal of Master Gnost-Dural
- Book of Sith: Secrets from the Dark Side
- Star Wars: The Ultimate Visual Guide: Updated and Expanded
- Star Wars: The Old Republic Encyclopedia