swallow hole

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Mayer Amschel Rothschild (1744-1855), founder of the house of Rothschild; lithograph by Friedrich Lieder, c. 1830.

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swallow hole

geology

Learn about this topic in these articles:

fluviokarst landscapes

In cave: Fluviokarst
Upstream from these “swallow holes” where surface streams are lost to the subsurface, the tributary valleys continue to deepen their channels. These evolve into so-called blind valleys, which end where a stream sinks beneath a cliff. At the top of the cliff is the abandoned floor of the…
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