I know this might not technically be in the Pine Barrens, but since it involves historical stuff in the woods, I figured I'd share. I took a stroll down the rail-trail that was part of the PRSL Williamstown Branch the other day and heading west from Fries Mill Rd. I noticed at about 100 yards past the 4 mile mark that there was an unusual amount of glass and cinders on the right side. After checking the pile of what looked like bulldozed roadbed from when they made the trail, I realized that this was an entire glassworks piled up on the side. Chunks and whole bricks, slag, cinders, and whole chunks of bottles and melted glass. I've seen cinder used as roadbed many times before, but this was a little different. On my way walking back I noticed it more, although not as concentrated as the first location. It almost looks like the entire remains of a glassworks was scooped up and dumped right in the railroad Right of Way. It seemed pretty old too as some of the bottle tops I found were hand blown and tooled with uneven edges, bubbles, and ash in the glass. I did some research and found out that the railroad ran past three glassworks, the Williamstown Glassworks in Williamstown, the Downer Glassworks, in Downer/Williamstown, and the Whitney Glassworks in Glassboro. I guess that the remains of one of these sites could have been used, especially since most of this line was funded by the Williamstown Glassworks. I just thought it was really weird to see such huge chunks of pooled glass and chunks of bottles used as ballast. I've only seen glass marbles used in ballast, and that was on the old Reading line between Clementon and Winslow Junction. Anyone else ever see anything like this before?