It's called the Big Nasty for good reason. Idaho's largest motorcycle event, attracted thousands of fans to New Plymouth this weekend. The event takes place every September on a ranch four miles north of town, and it provide riders with a grueling challenge...get to the top in one piece. The riders bikes are not your ordinary dirt bike...they are highly modified bikes that have up to 250 horse-power running on exotic fuels such as nitro-methane and nitrous-oxide, and using rear paddle wheels covered with metal chains and bolts. Riders come from all over the U-S and Canada for a chance to conquer the hill. Fans told us they are already looking foward to next year.