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.

Carreg yr Alltwen

Site description: Carreg yr Allwen and Henblas

Category: Scientific | Educational

Subcategory: Stratigraphy

Network: Precambrian

Subnetwork: Gwna Greenschist Quartzite

Local Authority area: Mon

National Park area:

Area of site in hectares: 0.23694786

Grid reference: [SH 40850 71511]

GR easting: 240850.014

GR northing: 371511.0723

Site geometry: Site boundary