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Stefan A. Schmidt: inside the Bilsteinhöhle, a big stalactite cave #10
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Stefan A. Schmidt: inside the Bilsteinhöhle, a big stalactite cave #7
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Stefan A. Schmidt: inside the Bilsteinhöhle, a big stalactite cave #6
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Stefan A. Schmidt: inside the Bilsteinhöhle, a big stalactite cave #5
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Stefan A. Schmidt: inside the Bilsteinhöhle, a big stalactite cave #4
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Stefan A. Schmidt: inside the Bilsteinhöhle, a big stalactite cave #3
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Stefan A. Schmidt: inside the Bilsteinhöhle, a big stalactite cave #2
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Stefan A. Schmidt: inside the Bilsteinhöhle, a big stalactite cave #1