The 25-year-old was chosen along with Charles Darwin and Scott of the Antarctic.

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Tom Sharpe, Antarctic geologist and curator of the exhibition Captain Scott, South For Science, argues that Wales fell in love with the mission because of the brilliant propaganda of the Terra Nova's second-in-command, Edward (Teddy) Evans, later Lord Mountevans.

BBC: Scott of Antarctic 'propaganda created Welsh obsession'

Greater protection for frozen wilderness in the Antarctic, timed to coincide with the centenary of Captain Scott's ill-fated expedition.

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Visitors will also be able to see the Welsh flag Scott planted in the Antarctic ice on St David's Day 1911 on his doomed return journey, in recognition of Wales' unrivalled support.

BBC: Scott of Antarctic 'propaganda created Welsh obsession'