Grapevine Canyon, located toward the southern end of Lake Mead National Recreation Area, is said to be among the best of all places to see the intriguing Native American rock art called petroglyphs. It’s certainly one of the easiest to visit. It’s especially good if you want to take small children or other folks who can’t hike long distances, as the best petroglyph panels are at the mouth of the canyon only about a quarter-mile from the parking area.