The northern hairy-nosed wombat (Lasiorhinus krefftii, NHN) or yaminon is one of three extant species of Australian marsupials known as wombats. It is one of the rarest land mammals in the world and is critically endangered. Its historical range extended across New South Wales, Victoria, and Queensland as recently as 100 years ago, but it is now restricted to one place, a 3 km2 (1.2 sq mi) range within the 32 km2 (12 sq mi) Epping Forest National Park in Queensland. With the species threatened by wild dogs, the Queensland Government built a 20-kilometre (12 mi)-long predator-proof fence around all wombat habitat at Epping Forest National Park in 2002.