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Soughs in the Wensley area Tearsall Sough This was started around 1635 and was driven from an underground swallow hole. It is the earliest documented example of this type of drainage. The initial portion of the sough from the swallow hole to its intersection with Dalefield Vein may have been constructed by enlarging a water worn passage. At this early period it is not likely that any cross-cut or level would have been driven through solid limestone.
Basrobin
Sough
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