Fron-Boeth and Pant Mawr Quarries, Historical slate quarries in Gwynedd, Wales.
Fron-Boeth and Pant Mawr are two connected slate quarries on the western slopes of Moelwyn Mawr mountain. The site contains extraction chambers, adits, a mill area, and remains of steam machinery that processed the slate.
Pant Mawr started slate extraction around 1850, while Fron-Boeth joined in 1886. Both quarries ceased operations during World War I, leaving behind their machinery and structures.
The site reflects the working lives of quarry laborers who operated in harsh mountain conditions. The preserved structures tell of the skilled craft of slate extraction that shaped generations of local families.
The site is accessible on foot with step-by-step exploration possible across different elevation levels. Sturdy footwear is recommended as the slopes are steep and ground conditions can be rough.
The site contains one of Britain's steepest transport systems in slate quarrying, a double-slope incline that moved thousands of tons of stone downward. This engineering feature was vital to how the quarry operated on this mountainous location.
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