http://www.youtube.com/watch?v=RAZqjsSZphE Over the past couple of years I've been guiding a guy in the Black Mountains and Brecon Beacons. The difference with these hikes is my friend is blind, blind from birth and has never seen the light of day. It's always a pleasure trying to explain things to him and in doing so it gives me a greater insight into the amazing complexity of this creation. If you can think of nothing else to be grateful for. Be grateful for the ability to see.