Photographers used to put film in the freezer to help keep them fresh, but it seems a cold environment can also help preserve it after it has been exposed. A team from the New Zealand Antarctic Heritage Trust, which are conserving an Antarctic exploration hut, have discovered a small box of undeveloped negatives frozen in a block of ice for almost 100 years. The film is believed to have been left by the Ross Sea Party of Sir Ernest Shackleton between 1914 and 1917.
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