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.
These allow original openings in the tunnel to discharge water and are fascinating to look at with a torch as you pass. My camera's flash isn't good enough to illuminate the interesting passageways, but below I've tweaked another photo, this one of the side shaft perhaps leading to an older alignment of the tunnel. Adam has written about this and taken a photo of it here.
Day 1 of our hols and not the best start.
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April 17th
A break in the weather at last and a great morning to set off in MB. Took
far longer to reach our destination though, not because of traffic,...
10 hours ago
2 comments:
And I wrote an article about the Blisworth side shaft in the January 2014 edition of Canal Boat.
Adam, yes - I knew I'd read more about it somewhere!
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