Among the State Parks we visited in Idaho was Massacre Rocks State Park. This State Park is located right along I-86 and has a number of interesting features. The park sits right next to the Snake River, has miles of hiking trails, a campground, a world class disc golf course, fishing, a swimming beach, and access to Oregon Trail wagon ruts. It would be an interesting place to stop and get some exercise playing their disc golf course or walking to the Oregon Trail Ruts…