National Forest Development Road 3243 is a hiking, biking, and horse trail in Park County, Montana. It is within Gallatin National Forest. It is 7.5 miles long and begins at 6,140 feet altitude. Traveling the entire trail is 15.1 miles with a total elevation gain of 1,999 feet. The Casey Lake (elevation 7,195 feet) wetland can be seen along the trail.
Sign in/up to upload photos.