What is recorded here
The National Monuments Record of Wales records Llyn Iwerddon as Dam from the 19th Century period. The saved point comes from the official national record. Inclusion does not by itself mean that the public may enter the place.
The historic-place record does not grant public access. Check current conditions and ownership before entering land or a building.
Places near here
IwerddonMountain / peak · 498 yd
Allt-fawrMountain / peak · 592 yd
Spoil at Llechwedd Slate QuarryOld home or work place · 1089 yd
Slate dressing shedOld home or work place · 1242 yd
The Secret WaterfallWaterfall · 1634 yd
Llechwedd Slate CavernsMuseum · 1727 yd
Craig NythygigfranCliff · 1.1 mi
Main Incline, Cwmorthin Slate QuarryInclined Plane · 1.2 mi
Festiniog Railway Level Crossing, Blaenau FfestiniogLevel Crossing · 1.2 mi
Craig y ClipiauCliff · 1.2 mi
Rhaeadr Tan-y-grisiau WaterfallWaterfall · 1.4 mi
Island in Llyn yr AdarIsland · 1.9 miOther information
Photo: Michael Graham · CC BY-SA 2.0