Polaroids show actors Jack Nicholson, Kirk Douglas, Warren Beatty and James Caan might’ve had a very easy way of getting to the Playboy mansion back in the ’70s.

A collection of blueprints were recently discovered by a Playboy editor who was going through the company’s archives for photos while working on an unrelated project, which show the actors had an underground pathway to get to the mansion.

Playboy reports a member of the staff said, “I heard [the tunnels] were closed up sometime in 1989."

Hugh Hefner didn’t want to make a comment on it and requests for comments from reps for the actors have gone unanswered.

Gawker reports the blueprints stated the tunnels lead to nearby homes that belonged to “Mr .J. Nicholson," "Mr. W. Beatty," "Mr. K. Douglas" and "Mr. J. Caan."

image via Karl Larsen/INFphoto.com