Difficult to tell from the plan if this is level 10 or 11; the upper floors of Fron Boeth have very little chambering, but this - the final chamber on the level - extends three floors and is quite impressive. Fron Boeth Slate Quarry May 2017
This photograph is by simonrl and was uploaded May 31st 2017. © simonrl please do not copy or distribute without prior express permission.
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