HBO will debut Naked States, a documentary about artist Spencer Tunick, as part of its America Undercover series on Sunday, April 8 at 10:00 PM.

The 74 minute film captures Tunick as he travels across the United States inviting his subjects to pose nude. A major part of the film is devoted to his photographing 1135 people at The Great Went. Though you may have seen similar footage in Bittersweet Motel, this documentary provides more of the photographer’s perspective. Check HBO for additional airdates.