I get the impression now that perhaps a couple of shallow seams of coal pass under Amble and have been worked in various places including Wellhaugh and into the town area as per the discussion regarding the Percy Street pumps on here, and these beach workings are possibly in the same seams. These seams are also in close proximity an aquifer that possibly cuts across the town from Gloster hill, via Hallbank well and Percy Street and on to the shore.
Wellhaugh is allegedly named such because of the well there - this is now supposed to be on the foreshore- it is there - it's either a well or an ancient coal shaft that's gone artisian. So perhaps that is the eastern extremity of the accessible part of it.
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