A site of geological importance, the cliffs here show the boundary between the ancient Precambrian rcks and the later Ordovician sedimentary deposits about 470 Million years ago. The jumble of Precambrian rocks are particularly impressive, including huge fragments of diverse origin  welded together under intense pressures over the ages. There are various access points from the coastal footpath and the tiny church at Ty'n-Llan with its Islamic decoration provides an interesting diversion.
Anglesey map

SSSI Citation

Potentially Damaging Operations list

Site Management Statement

Aerial Photograph

Map reproduced by permission of Ordnance Survey ® on behalf of the Controller of Her Majesty's Stationery Office. © Crown copyright. All rights reserved. License number 100044910.