The remains of a small boiler, possibly a vertical boiler lies rusting in the swamp is one interpretation. It could also be an air-pressure vessel use to supply compressed air quarrying equipment. If you know what it is do please let us know.
No EXIF information is available
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Keywords:Rhiwbach slate quarry, boilers, boilers, cwm penmachno, cymru, engineering, quarries, quarrying, rhiwbach, slate, snowdonia, steam power, wales, wrought iron