As described in this spring 2012 video:
Only a few know exactly where the tunnels are located. Somewhere in Pine Lake Park, Manchester Township.
Do you know where they are?
Here is one descriptions:
"From the Firehouse, take Manchester St. north and go all the way to the end, where you will find woods. Immediately upon entering the woods is a trail that goes to the left. Take that trail all the way to the end. Half way down is a fence that seperates Pine Lake from Leisure Village West. Walk along the fence all the way to the end. The "tunnels" are actually sewer drain pipes coming from Leisure Village West. Warning: You will be trasspassing on Leisure Village property."