Antelope Canyon was one of the most amazing places we have seen in our US holiday this year! The slot canyon was formed by erosion of sandstone, primarily by flash flooding, but also the rainwater is cutting into the stone walls, smoothing the hard edges in such a way as to form the “flowing shapes’ in the rock.           It is a spectacular looking place and understandably very popular with photographers, which was a bit frustrating at times. The people running the tours are very nice and they try to accommodate everyone, but in order to do that, they have to rush you through. You can…