Hugo, just as you say that my seashore walk from Llanfairfechan to Llandudno prompted you to try that route, (but I used the cycle path on the section from Llanfair to Pen as I wasn't sure if you could go round the headland on the beach at the time) you have now prompted me to do it! I have seen the road viaduct and the railway line from the "Balmoral" on the round Anglesey trip a few years ago and I have also been lucky enough to fly alongside it in a Cessna light aircraft when I knew someone with a Private Pilot's Licence and it does make you appreciate the workmanship and effort put into the construction of the viaduct. I will be doing the walk in the near future (after checking the tides!). I seem to recall a story from the sixties about a lad who didn't know the area was giving two girls a lift on the road between Pen and Llanfair at night (before the Westward tunnel was built) and he stopped and hopped over the wall for a pee on the viaduct and after a few minutes passed and he didn't return the girls got out to look for him and realised there was a huge drop down onto the beach.