Natural Resources Wales. Data downloaded from DataMapWales and used under the Open Government Licence for Public Sector Information (OGL). This information is provided to highlight sites of geological interest in Wales. For issues relating to sites that have RIGS status please consult the relevant authorities for up to date information regarding designation status, planning and other administrative issues.

Pen Las Rock

Site description: Pen Las Rock

Category: Educational | Scientific

Subcategory: Igneous Petrology

Network: Tertiary

Subnetwork: Dyke

Local Authority area: Mon

National Park area:

Area of site in hectares: 0.99680514

Grid reference: [SH 20859 81686]

GR easting: 220859.0728

GR northing: 381686.2695

Site geometry: Site boundary