Llŷn boasts a large number of fresh water wells, many of the wells have religious links and contribute greatly to the area's character and culture, some are believed to possess healing properties.
One of the most important wells in the area is Ffynnon Fyw, Mynytho (near Hebron Chapel). Myrddin Fardd, a local antiquarian refers to it in his volume Llên Gwerin Sir Gaernarfon (1908), where it is described as an exceptional well, enclosed by walls 6 or 7 ft. high, with steps leading down to stone seats surrounding two basins within.
Work on this well was given priority due to its historical importance, its distinctive architecture and its prominent location.
By now several other wells in the area have benefited from some clearing and restoration work, these include Ffynnon Aelrhiw in Rhiw, Ffynnon Saint in Aberdaron, Ffynnon Sarff in Mynytho, and Ffynnon Aelhaearn in Llanaelhaearn.