Eryrys is a village in Denbighshire, Wales, located at approximate grid reference SJ203578, five miles south of Mold. The village is built on the limestone formation of Bryn Alyn and many limestone outcrops can be seen close by. At 355m above sea level, Eryrys is one of a number of villages with a valid claim to be the highest in Wales; others include B…Eryrys is a village in Denbighshire, Wales, located at approximate grid reference SJ203578, five miles south of Mold. The village is built on the limestone formation of Bryn Alyn and many limestone outcrops can be seen close by. At 355m above sea level, Eryrys is one of a number of villages with a valid claim to be the highest in Wales; others include Bwlchgwyn, Wrexham, and Garn-yr-Erw, Torfaen.