If you like this, then you'll really like the series currently running on the BBC about the crossrail excavation - they have some great video of the TBMs in ope

If you like this, then you'll really like the series currently running on the BBC about the crossrail excavation - they have some great video of the TBMs in operation. http://www.crossrail.co.uk/news/articles/the-bbc-goes-behind-the-scenes-for-crossrail-documentary-series http://www.crossrail.co.uk/news/articles/the-bbc-goes-behind... If you are in London, you might also like the Brunel Museum which is at the end of a tunnel under the river which was hang-dug using a human powered TBM. You can go down into the Rotherhithe shaft which was the staging post for a lot of the digging. The museum itself is pretty small but the guided walks are great. http://www.brunel-museum.org.uk/history/the-thames-tunnel/ http://www.brunel-museum.org.uk/history/the-thames-tunnel/