Fast, twisty descents are all over the world but what makes them dangerous is the speeds that are trying to be achieved and turns that come up too quickly without knowing how tight they are going to be. The guys at GCN put together the following video highlighting some of the most dangerous descents in the world. You probably have a few tricky descents near you. What features make them dangerous and how do you navigate them safely? Let us know in the comments below.