I can't remember his name, but an Aussie sang a song in our folk club about the Pont Cysylte (if I've spelt it right)aqueduct near LLangollan. He was terrified of heights and the song really brought this out. I had been trying to decide where to spend a few days and that decided me. It was an amazing experience, travelling in a narrow boat high above the valley, feeling as if you could go over the side at any moment. I can highly recommend the experience, and would also love to get hold of the song if anyone can help.