After entering Spotted Fawn Canyon, the road gets much rougher and narrow. It was built for jeep sized vehicles but I found the road tread to still be in good shape. Snow could be a stopper (it stopped Greg and Kadee at the 6000' level when they visited) but overall, it was a road that was still in decent shape. The mine itself dates back 100 years and is privately owned so respect the property when you visit.