Council Rock was a sheer black mesa on Kashyyyk, ringed with observation platforms, where the Wookiee government met.
Before the Battle of Kashyyyk, Han Solo and Leia Organa Solo reunited with Tarfang and Jae Juun, who attempted to arrest the Solos. Leia and Tarfang fought over the Tyrossum jawbone for control of the conversation as per customs. Since Leia was not able to use the Force the battle was difficult and brutal with Tarfang trying to choke Leia and bash her head against the rock. Eventually Leia tossed Tarfang off of the rock just as Luke arrived. Tarfang gave the jawbone, which granted whoever held it the right to speak at the Council, to Luke.