 In winter, when the modern asphalt road is covered in snow and closed for the season, one can still make one's way by foot up the old trail from Five Springs Campground.Stephen C. Simms of the Chicago Field Museum, upon examining the Wheel in 1903, surmised that the travois trail (road) must have been well-traveled for long periods in the past to acquire its deeply cut edges.The Bighorn Mountains are high above the hot summers of the basin.