Also situated within Fiordland are Browne Falls and Sutherland Falls, which rank among the tallest waterfalls in the world, and New Zealand's three deepest lakes, Lake Hauroko, Lake Manapouri, and Lake Te Anau. Several other large lakes lie nearby, and Fiordland and the surrounding parts of Southland and Otago Regions are often referred to as the Southern Lakes. Only a handful of Fiordland's lakes are accessible by road - Lake Poteriteri is the largest lake in New Zealand with no road access. Many of the region's lakes are not even accessible via tramping tracks.