Nine Mile Canyon
The name is deceptive - the canyon measures 46 feet in length and can be quite taxing for the unprepared. It is known as the "longest art gallery in the world" with petroglyphs spanning the length of the canyon on both sides. The Fremont tribe, who inhabited the region from 300 to 1500 CE, were the artists. What happened to them afterwards is a bit of a mystery; they were either vanquished or absorbed by more aggressive tribes. Rule for the hike: get a full tank of gas before you go. Each person should have a backpack full of water and snacks. Don't take anything that you might see in the canyon; it is against the law.