This is the most challenging course on the western part of Montana. It is a joint venture (much like the Holy Cross Trail in CO) between the forest service and the local 4x4 clubs. There is a 9' bypass around all the obstacles. Obstacles range from being easy to being very challenging and buggy worthy. It is still a work in progress- about 45 miles of obstacles- another 120 miles proposed. Fun time! Pictures from multiple trips as well as the internet (Big Sky 4Wheelers/ Skyline 4 Wheelers) Read more »