Trow Gill is a wooded limestone ravine at the head of Clapdale near Clapham in the heart of Yorkshire's "Three Peaks" limestone country.
Now a dry gorge, Trow Gill was possibly once an underground cavern formed by waters which now take an alternative route through the Ingleborough Cave / Gaping Gill system. At some point in time the roof of this cavern is believed to have collapsed - Trow Gill being the suggested result (though other theories have the ravine as simply a glacial meltwater channel).
Near Trow Gill is Foxholes, a neolithic rock shelter.
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