Sona is a living hell for Bellick. Unlike Fox River where he had authority, here he is weak, despised, and physically vulnerable.
However, he does not escape during the main breakout orchestrated by Michael Scofield in Season 3. Instead, he remains trapped until the beginning of Season 4, when he escapes during a massive prison riot. How Bellick Escaped: The Sona Fire does bellick get out of sona