Guess where I'm at?

I traveled this past week to teach an internal course about the mechanics of rubber to Cooper materials and product engineers. Our Melksham plant is only 20 miles away from Stonehenge! One of my colleagues here took me on a tour of the area. So much history. We saw world's largest man-made hill, and other stone formations. Did you know the stones here (which are massive) came from Wales, and were put together around 3000BC?! How did they get them here? Nobody knows who or how.