query: When was the first arctic expedition?
passage: Arctic exploration
On April 6, 1909, Robert Peary claimed to be the first person in recorded history to reach the North Pole[10] (although whether he actually reached the Pole is disputed).[1][16] He traveled with the aid of dogsleds and three separate support crews who turned back at successive intervals before reaching the Pole. Many modern explorers, including Olympic skiers using modern equipment, contend that Peary could not have reached the pole on foot in the time he claimed.
passage: Imperial Trans-Antarctic Expedition
The Imperial Trans-Antarctic Expedition of 1914–1917 is considered to be the last major expedition of the Heroic Age of Antarctic Exploration. Conceived by Sir Ernest Shackleton, the expedition was an attempt to make the first land crossing of the Antarctic continent. After Amundsen's South Pole expedition in 1911, this crossing remained, in Shackleton's words, the “one great main object of Antarctic journeyings”. The expedition failed to accomplish this objective, but became recognized instead as an epic feat of endurance.