Creigiau Canol (Unclassified).
Grid Reference: SN 80142 68706. Parish: Ysbyty Ystwyth, Cardiganshire
When recorded: 1898-1908. Primary Source: OS 2nd Edition Maps. Secondary Source: GB1900 website

Creigiau Car (Unclassified).
Grid Reference: SN 79520 68956. Parish: Ysbyty Ystwyth, Cardiganshire
When recorded: 1898-1908. Primary Source: OS 2nd Edition Maps. Secondary Source: GB1900 website

Creigiau Cerrigceinwen (Unclassified).
Grid Reference: SH 42273 73651. Parish: Cerrigceinwen, Anglesey
When recorded: 1898-1908. Primary Source: OS 2nd Edition Maps. Secondary Source: GB1900 website

Creigiau Cliperau (Unclassified).
Grid Reference: SH 28025 85087. Parish: ,
When recorded: 1898-1908. Primary Source: OS 2nd Edition Maps. Secondary Source: GB1900 website

Creigiau Cochion (Unclassified).
Grid Reference: SH 75440 83655. Parish: Llandudno cum Eglwys-rhos, Caernarfonshire
When recorded: 1898-1908. Primary Source: OS 2nd Edition Maps. Secondary Source: GB1900 website

Creigiau Cochion (Field).
Grid Reference: SN 61162 98896. Parish: Tywyn, Merionethshire
When recorded: 1841. Primary Source: none. Secondary Source: Cynefin

Creigiau Coed (Unclassified).
Grid Reference: SN 79473 67324. Parish: Upper Gwnnws, Cardiganshire
When recorded: 1898-1908. Primary Source: OS 2nd Edition Maps. Secondary Source: GB1900 website

Creigiau Cromlech (Unclassified).
Grid Reference: SH 42506 71701. Parish: Llangristiolus, Anglesey
When recorded: 1898-1908. Primary Source: OS 2nd Edition Maps. Secondary Source: GB1900 website

Creigiau Duon (Unclassified).
Grid Reference: SN 87325 56130. Parish: Llanfihangel Abergwesyn, Brecknockshire
When recorded: 1898-1908. Primary Source: OS 2nd Edition Maps. Secondary Source: GB1900 website

Creigiau Duon (Unclassified).
Grid Reference: SN 85445 77749. Parish: Llangurig, Montgomeryshire
When recorded: 1898-1908. Primary Source: OS 2nd Edition Maps. Secondary Source: GB1900 website