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swallow hole
(redirected from swallow holes)

   Also found in: Dictionary/thesaurus 0.01 sec.
swallow hole [′swäl·ō ‚hōl]
(geology)
An opening that occurs occasionally at the bottom of a sinkhole which permits direct drainage from the surface into an underground channel.

swallow hole
A term occasionally used as a synonym for owl hole although swallow holes are usually smaller.


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Along parts of the River Alyn the bed is dry where water drains away down swallow holes on the bed and banks.
When discharge exceeds the capacity of the fractures to divert the water, the flow over the waterfall is directed into the overflow channel 3 at the north end of the gulf where it is then diverted underground through a series of swallow holes (Fig.
 
 
 
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