In extreme sports and survival challenges, rescue is a phone call away. Polar explorers played for real: extraordinary men entering the unknown for years at a time. High on a list of such explorers are Crozier, McClintock, McClure and Shackleton, all Irish. The saga began when Arthur Dobbs advocated the existence of the Northwest Passage. Later, Bransfield made the first sighting of the Antarctic in 1820. It continued with the discovery of the Antarctic Ice Shelf and the charting of the Ross Sea in 1841 by Ross and Crozier. The pace quickens with considerable Irish involvement in the search for Franklin, Crozier and their men. The story ends with the heroic age of Antarctic exploration and the burial of Shackleton in 1922 in South Georgia. Many of these names, including Sabine, Keohane, Crean, Forde and McCarthy, dot maps of the frozen lands. Some left a trail of cairns and bones as they perished, others were promoted, acclaimed for bravery or achieved scientific recognition. This is truly a story of heroism, drama and tragedy.