Port Arthur is an easy 90-minute drive from Hobart via the Arthur Highway. A private vehicle is essential if you want to explore parts of the Tasman Peninsula beyond the historic settlement. A vehicle is absolutely essential on the west coast. The road from Hobart travels through the Derwent Valley and past lovely historic towns before rising to the plateau of central Tasmania. Many of the northwest roads are twisty and even unpaved in the more remote areas, but two-wheel drive is sufficient for most touring. Be prepared for sudden weather changes: snow in the summertime is not uncommon in the highest areas. Lake St. Clair is 173 km (107 miles) northwest of Hobart, and can be reached via the Lyell Highway, or from Launceston via Deloraine or Poatina. Cradle Mountain is 85 km (53 miles) south of Devonport, and can be reached by car via Claude Road from Sheffield or via Wilmot. Both lead 30 km (19 miles) along Route C132 to Cradle Valley.