... on the way we went through a mountain pass so fogged in we were forced to crawl along at camel speed. Then it was suddenly over. Visibility went from four feet to unlimited in the space of a car length. We pulled off the side of the road to get a picture. No amorphous cloud, you could see literally a wall of fog extending for miles along the ridgeline. Others suddenly emerging from the fog were stopping and taking pictures too – we guessed mother nature decided to outdo the manmade sights with one of her own. ...