Craig yr Aderyn, Rocky summit in Gwynedd, Wales
Craig yr Aderyn rises 258 meters above sea level, featuring steep cliffs and rocky outcrops that dominate the Dysynni Valley landscape.
The summit contains remains of an Iron Age hillfort with two construction phases, including an upper fort enclosure measuring 100 by 55 meters.
Local Welsh communities refer to the two main faces of the hill as Y Palis Mawr and Y Palis Bach, meaning large stockade and small stockade.
The site maintains seasonal climbing restrictions from April through July to protect nesting birds, with specific guidelines enforced by conservation authorities.
This location holds Wales's largest inland cormorant nesting colony, situated unusually five miles from the current coastline.
Location: Gwynedd
Elevation above the sea: 258 m
GPS coordinates: 52.64241,-4.00606
Latest update: March 6, 2025 19:17
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