The Discovery Expedition of 1901–1904, known officially as the British National Antarctic Expedition, was the first official British exploration of the Antarctic regions since the voyage of James Clark Ross sixty years earlier (1839–1843). Organized on a large scale under a joint committee of the Royal Society and the Royal Geographical Society (RGS), the new expedition carried out scientific research and geographical exploration in what was then largely an untouched continent. It launched the Antarctic careers of many who would become leading figures in the Heroic Age of Antarctic Exploration, including Robert Falcon Scott who led the expedition, Ernest Shackleton, Edward Wilson, Frank Wild, Tom Crean and William Lashly.
Its scientific results covered extensive ground in biology, zoology, geology, meteorology and magnetism. The expedition discovered the existence of the only snow-free Antarctic valleys, which contains the longest river of Antarctica. Further achievements included the discoveries of the Cape Crozier emperor penguin colony, King Edward VII Land, and the Polar Plateau (via the western mountains route) on which the South Pole is located. The expedition tried to reach the South Pole travelling as far as the Farthest South mark at a reported 82°17′S.
As a trailbreaker for later ventures, the Discovery Expedition was a landmark in British Antarctic exploration history.
Between 1839 and 1843 Royal Naval Captain James Clark Ross, commanding his two ships HMS Erebus and HMS Terror, completed three voyages to the Antarctic continent. During this time he discovered and explored a new sector of the Antarctic that would provide the field of work for many later British expeditions.
Ross established the general geography of this region, and named many of its features; the Ross Sea, the Great Ice Barrier (later renamed the Ross Ice Shelf), Ross Island, Cape Adare, Victoria Land, McMurdo Sound, Cape Crozier and the twin volcanoes Mount Erebus and Mount Terror.