The Rotherhite Tunnel
By this stage of the ride, I've got an idea where I am going, but I'm stopping off for the opportunity to show you the Rotherhithe Tunnel, built at the end of the 19th century. I'm standing in the road to take the photo because the tunnel is closed for a few weeks - so they can fix a gas leak that has been going for the last two years! One identifying feature of this tunnel is that there is a very sharp bend close to each end, you can see it if you look carefully at the large picture. That's there so that horses couldn't see the light too early and bolt! History and background is here.