History
Dar-Kenda is an inescapable prison built deep within Planet T-37X, the homeworld of the Watchers. Uatu was brought to Dar-Kenda by his fellow Watchers and forced to witness a reality where he didn't intervene when Galactus first arrived on Earth and learned that not only was intervention unnecessary but it also robbed Earth of the chance of being turned into a paradise. Uatu was then forced to watch the reality as punishment for his constant meddling in Earth's affairs.[1]