3 - Four Mile Bridge to Trearddur
Bwa Gwyn ( White Arch) - 1
A fine Natural Arch , formed from white quartzite , a metamorphosed sandstone.
China Clay was quarried in this area.
A grindstone used to extract the China Clay is on top of the Arch.
Ref: NW 746
Date: 27/04/2022
Location: SH 2594 7609
