 The Penmachno quarry lay immediately south and above the settlement.Higher up the valley was the Rhiwbach slate quarry, which was formerly linked by the Rhiwbach Tramway to the Ffestiniog Railway at Blaenau Ffestiniog.Streams flow from the steep-sided valley, forming the source of the River Machno, which flows through the larger village of Penmachno before joining the River Conwy south of Betws-y-Coed.