The Shadowlands, also known as the Shadow Forest and the Nother World, was the dark ground level of the forests of the planet Kashyyyk. It was dark since the sunlight could not reach it through the tall trees and the rich foliage.
The Shadowlands were a dangerous place, inhabited by savage beasts like katarns and terentateks. Wookiees seldom went there (by means of wooden elevators) from their platforms. They visited only for ceremonial reasons, such as rites of passage. Famous Wookiees like Chewbacca would often go there to prove themselves against the forest's strong, natural obstacles. It was also a place of exile.
The creation of the Shadowlands may have been due in part to a malfunctioning terraforming machine created by the Rakata Infinite Empire. According to a holo-adapted interface installed by Darth Revan to better access the ancient data, the planet was incapable of sustaining sufficient levels of production and had to be terraformed in order to export produce. According to Jolee Bindo, the dark side energies of the Star Map and the malfunctioning machine may have led to the accelerated evolution of various species, leaving the Shadowlands extremely dangerous when the Rakata abandoned Kashyyyk.
When Revan visited the Shadowlands to find the Star Map for a second time, he found Jolee living in a hut in the depths of the forest. In order for Revan to find the Star Map, he was asked by Jolee to deal with Czerka Corporation employees that were hunting tach glands for use in Tarisian ale. The hunters were displaced when Revan managed to deactivate the sonic field, which they had set up to prevent large predatory animals of the Shadowlands from attacking them. The deactivation resulted in a terentatek rampaging through the camp. Jolee then agreed to shut off a force field that the Czerka crews had set up, allowing Revan to access the ancient Star Map.
At some point in time before 1 ABY, a large group of battle droids, including B1 battle droids and Droidekas, was abandoned in the Shadowlands below the Rryatt Trail. Later, a group of dark-adapted Gotal hunters and poachers also discovered the dark jungle, built a hunting camp and began exploiting the fierce wildlife.
- "Shadows and Light"—Star Wars Tales 23
- Star Wars: Knights of the Old Republic
- Star Wars: Knights of the Old Republic II: The Sith Lords (Mentioned only)
- Star Wars: The Old Republic (Codex entry)
- Star Wars: The Old Republic: Rise of the Hutt Cartel (Mentioned only)
- Star Wars Adventures: Chewbacca and the Slavers of the Shadowlands
- The Clone Wars: Decide Your Destiny: The Way of the Jedi
- Star Wars: Republic Commando
- Star Wars Galaxies: Rage of the Wookiees
- The Wookiee Storybook (First appearance)
- A Forest Apart (as Shadow Forest) (Mentioned only)
- Tyrant's Test (as Shadow Forest)
- Star Wars: Chewbacca (Appears in flashback(s))
- Secrets of Kashyyyk"—Star Wars Gamer 4 "
- The Official Star Wars Fact File 12 (WOO1–3, Wookiees) (Indirect mention only)
- Ultimate Adversaries
- (Indirect mention only)
- "Han Solo: The Early Years"—Star Wars Insider 106