Descent Into the Earth

Three ways the book takes you underground: the Grotto of Antiparos, its stalactites likened to icicles; the granite Cheese Wring balanced by weathering alone; and the bucket-descent into the iron mines of Persberg, Sweden.

The Grotto of Antiparos, descended some 1,500 feet below the surface
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The Cheese Wring, a granite pile shaped by weathering, not builders
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Descent by bucket into the iron mines of Persberg, Sweden
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Descent Into the Earth

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