Poland: Bobbie goes underground into a World War II Nazi bunker, which runs for 30 miles to discover the largest hibernating colony of bats in Europe - 30,000 of them in fact 4/13
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Poland: Bobbie goes underground into a World War II Nazi bunker, which runs for 30 miles to discover the largest hibernating colony of bats in Europe - 30,000 of them in fact 4/13