Small quarry*

The original site has since been redeveloped. The former tramway route can still be traced in places, partly preserved in the layout of modern streets in Llanberis.

Active mainly during the 1870s and 1880s and was associated with several small workings including Chwarel y Person, Coed y Ddol, Green’s, Potter’s, Twll Tomos Lewis, and Ty Du. Despite its modest scale, it maintained its own tramway connection to Llanberis station, the same line also serving as a tipping route into the lake. Water power is thought to have been used for pumping. Output was relatively small, amounting to a few hundred tons per year. The quarry ceased operations around 1890.