As if snorkeling in a bog is not enough to make you puke, using a mountain bike to journey in the icky smelly water makes for a sport that is known the world over. Mountain Bike Bog Snorkeling has been such a craze that this sport is not only played by natives, but is also attended to by foreign competitors from different countries. There is even a world championship for this game. You need to go through the Waen Rhydd bog two times with the mountain bike being filled with lead, and you must have the shortest time record for the win.