The haunting Eastern State Penitentiary in Philadelphia is once again home to Terror Behind the Walls, which includes a brand-new attraction for 2017: Blood Yard.

Terror Behind the Walls consists of six attractions housed in the cell blocks of Eastern State Penitentiary: Machine Shop, Infirmary, Lock Down, Breakout!, Quarantine 4D, and the new Blood Yard. The attraction brings visitors deep within the prison compound to discover the camp of a gruesome colony. A path marked with bones brings you deeper into the lair of butchers, warriors, and an ancient empress before finally reaching a gory site filled with gnawed bones and decaying flesh.

Take a look at the creepy trailer for Blood Yard below.

WATCH – BLOOD YARD AT TERROR BEHIND THE WALLS:

Terror Behind the Walls runs select nights from September 22 – November 11. All six attractions are included with admission. Ticket prices start at $19 and vary by night.

To purchase tickets, head over to the Terror Behind the Walls website.