Tarok was a barren moon in Kazon-Ogla territory, strewn with traps and automated defences left from training exercises, where Chakotay and the Kazon youth Kar took refuge in 2372.
Tarok features in the second-season opener Initiations. The Ogla use the moon to drill their warriors, and its surface is seeded with hidden weapons that make it deadly to anyone who does not know the ground.
After Chakotay spares the life of Kar, a boy sent to kill him as a rite of passage, the pair flee an Ogla ship in a damaged shuttle and come down on Tarok. Kar, disgraced by his failure, expects to be executed by his own sect.
When First Maje Razik arrives with Janeway's rescue party, Chakotay offers Kar the chance to earn his name by killing him. Kar instead shoots Razik, winning his place under the new maje.