"Due to tectonic shifts in the Ice Age, the Rhine River was forced into a new riverbed over 15,000 years ago. The Rhine Falls came into being at the transition point where hard chalk turned into soft gravel. Over a breadth of 150 meters, several hundred cubic meters of water rush into the depths at the rate of 23 meters per second. In the middle of it all stands a mighty rock that has withstood the elements for a thousand years. The rock can be reached on a circular tour of the Rhine Falls, during