Exclusive Peek: Final Survivor Immunity Challenge

This Sunday night, Survivor's final four will battle it out for a million dollars and a new winner will be named. ET has a sneak peek at photos of the final immunity challenge, which looks to be a mind-over-matter type task that Survivor has favored in the past at this point in the game. Click through for pics of the final four balancing silver balls on a stick. The Survivor: Philippines two-hour season finale will air this Sunday night on CBS at 8:30 ET/7:30 CT/8:00 PT, immediately followed by the live one-hour reunion show.