The band also set a record for being the first to perform on all seven continents - and all within a calendar year. In the documentary, Ulrich says: "We love to get out of the house and explore and there's no better place to do it than right here."

The 20-minute film was shot by director Adam Dubin, who also produced A Year and a Half in the Life of Metallica in 1992. Metallica say: "We found ourselves playing a gig for a couple dozen friends, fans and penguins at Carlini Base in the South Shetland Islands of Antarctica.