The Routeburn Track is a world-renowned, 32 km tramping (hiking) track found in the South Island of New Zealand. The track can be done in either direction, starting on the Queenstown side of the Southern Alps / Kā Tiritiri o te Moana, at the northern end of Lake Wakatipu or on the Te Anau side, at the Divide, several kilometres from the Homer Tunnel to Milford Sound / Piopiotahi. The New Zealand Department of Conservation classifies this track as a Great Walk and maintains three huts along the track: Routeburn Flats Hut, Routeburn Falls Hut, and Lake Mackenzie Hut; in addition there is an emergency shelter at Harris Saddle. The track overlaps both the Mount Aspiring and Fiordland National Parks, with the border and highest point being the Harris Saddle. There is access to another tramping area called the Greenstone and Caples Tracks from Lake Howden near The Divide. This area gets much less rain than Milford Sound / Piopiotahi, and the forests are very different, especially on the eastern side of the saddle, which due to less rainfall is predominantly made up of New Zealand red beech and mountain beech, with relatively few ferns. The track spends a long time on the high ridges around Harris Saddle, with great long-distance views in many directions. The track has a long history of use dating back to the 1880s. Tramping Access to the Routeburn Track is not as tightly controlled as the Milford Track. Camping is allowed, though both huts and camping spaces must be booked in advance during peak season. There is a choice of which direction to go, and which huts to stay in. On the western side, most trampers stay at the Lake Mackenzie Hut, but on the eastern side, one can stay at the Falls Hut or Flats Hut. The Falls Hut is more popular, since staying there breaks up the climb to the saddle better, especially coming from the east. Camping is not allowed at Falls Hut. In the winter, the Falls Hut is commonly used as a ski touring base for easy access into the Serpentine Range and beyond. As it is a relatively short track, much of the Routeburn Track is also accessible to day hikers. Key Summit (918m), on the western end is the site of a popular viewpoint and nature walk not far from the roadway, and the return to the Routeburn