The dark forests of Sector 7, also known as the Shadowlands, were located on the planet Kashyyyk, and were given the designation by the Galactic Empire. The Kashyyyk resistance found refuge in the Shadowlands during the reign of the Galactic Empire.
To enlist Tarfful's assistance for his mission, Cal Kestis journeyed to the Shadowlands in 14 BBY to locate the leader of the Kashyyyk resistance.