She is conducting a month-long scientific project into glaciers around Port Lockroy, a former whaling station which is now a British research center.

CNN: Antarctica: On thin ice

The UK Antarctic Heritage Trust rely on sales of Antarctic stamps and gifts from the Port Lockroy shop to fund up to half of their heritage work each summer.

BBC: Antarctic work trip for Kathleen and Joe Leavy

Joe will be joined on Detaille Island by fellow Neath carpenter Mike Powell, while Kath's boss at Port Lockroy has been learning her trade at the post office in Abergavenny.

BBC: Antarctic work trip for Kathleen and Joe Leavy

But Tudor Morgan, the heir to the dynasty, is back behind a counter once again - 10, 000 miles away in one of the world's most southerly shop at Port Lockroy on Antarctica.

BBC: Antarctic career lands Tudor Morgan Queen's Polar Medal

Rick Atkinson is Base Manager at Port Lockroy.

CNN: Antarctica: On thin ice