Yes, as Adam and Steve have identified, the photo is of one of the many square holes in the "new" concrete-lined section of Blisworth Tunnel.
Summer Cruise Day 39 Disley to Higher Poynton - We woke to the sun streaming in through the port holes and for once Smudge was still out for the count. It took him a while to come too. Must have been a...
5 hours ago