I deliberately put this posting under 'Home Improvement' because these Bunkers do need a bit of catching up. This last photo is the back side of a bunker. It's hard to tell by the photo, but the lump that is the bunker is quite big... Maybe 30' (9+ meters) tall. These are located in what is now conservation land. The Bunkers are obviously empty now and slowly mouldering away. They were once used for ammunition storage during WWII. Located in Maynard...Stow?, they were deemed far enough from Boston Harbor to be out of reach of German shelling from the water. There must be 50 of these things. The place has a very eerie feel to it. The land is now the Assabet River Wildlife National Wildlife Refuge. Some of the wildlife: Before anyone asks, I have no idea what kind of wildlife these are....?maybe stone age?