Site landscaped aka flattened.

Quarrying at this site likely began as a pit operation during the seventeenth century. By the 1820s, it ranked among the “big four” quarries—alongside Cilgwyn, Talysarn, and Pen y Bryn—that supported the establishment of the Nantlle Railway. However, unlike its counterparts, it never achieved substantial expansion, and all four were eventually eclipsed by the larger Dorothea and Pen yr Orsedd quarries. In 1807, the quarry gained historical significance by replacing its pumping waterwheel with a steam engine, marking the first application of steam power in the slate industry. Over-excavation led to disaster in 1817 when the engine collapsed into the pit. The quarry continued to operate intermittently until the Second World War, experiencing a particularly productive period during the 1890s. Output generally remained small: in 1873, just four men produced only eight tons, though employment had increased to ten workers by 1938. The quarry maintained a small processing mill and benefited from a direct connection to the Nantlle Railway.