Oddly, that section of the tunnel doesn't exhibit symmetry in the technical mathematical sense, even though at first glance most people's eyes/brains assume it does. It's not quite an optical illusion, more of a subconscious engineering assumption by biological brains that evolved in a more symmetrically repetitive pre-technological world.
I can't remember what business I had in London, but I managed to spend a few hours most days wandering along the Thames from Woolwich to Battersea, with detours, which was a most satisfying occupation with many, sometimes surprising, rewards. I stuck my nose into everything, of course, not only the Greenwich foot tunnel.
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timeasmymeasure
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Date: 2015-08-10 09:07 pm (UTC)What occasioned the visit, if I may be so nosy?
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Date: 2015-08-10 09:34 pm (UTC)I can't remember what business I had in London, but I managed to spend a few hours most days wandering along the Thames from Woolwich to Battersea, with detours, which was a most satisfying occupation with many, sometimes surprising, rewards. I stuck my nose into everything, of course, not only the Greenwich foot tunnel.