This guy cleaned the moss from a steep rock, before cycling down the now clear path. Water utility operator Matthew Bolton, 27, from Squamish, British Columbia, Canada, has been riding since he was 14 years old and recently moved out West to further enjoy his hobby, due to the vast amount of mountain bike trails. Matthew rappelled down a steep rock face and cleared it of moss and debris using a range of tools, in order to make it safer for him to ride down. After cleaning a set path into the stone, Matthew got on his bike and rode down the vertical slope.