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Hugh Rooney | all galleries >> Galleries >> SWITZERLAND - CHATEAU D'OEX BALLOON FESTIVAL 2008 > SWITZERLAND - CHATEAU D’OEX
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24-JAN-2008

SWITZERLAND - CHATEAU D’OEX

EACH CUBIC FOOT OF AIR IN THE BALLOON CAN LIFT JUST 7 GRAMS SO ABOUT 65000 CUBIC FEET OF HOT AIR IS NEEDED TO GET LIFTOFF


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