It soon passed while I cleaned the windows and Chico taught Roger to play ball.
It would have been good if they'd switched the fans on before we went into the tunnel as the first couple of hundred yards were really foggy and quite spooky.
Inside the tunnel the roof level varies quite considerably but you can tell where the low sections are because of fluorescent painted markers.
but others are quite high
About 500 yards before the North portal is this painted skeleton. Someone obviously had a good sense of humour!
I managed to stay on the back of the boat all the way through the tunnel. It was a lot less claustrophobic than I'd expected as we have a magnetic based work lamp that plugs into the 12V socket in the engine room and which illuminates the tunnel where you stand, rather than just relying on the tunnel light on the bow.
This was the North portal, the light at the end of the tunnel. It had taken us 35 minutes to get through and I really enjoyed it.
Maybe next time I'll drive!