Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
O.S. map of Brecknockshire and Monmouthshrie
Geological Survey of England & Wales Edition of 1922 Brecknockshire sheet XLVIII NE Monmouthshire Sheet XI NE 1927. Key to left and right. Scale: six inches to one statute mile or 880 feet to one inch = 1/10560
Pwnc
Diwydiant
Rhif yr Eitem
87.244I/40
Derbyniad
Collected officially, 31/12/1987
Mesuriadau
Meithder
(mm): 480
Lled
(mm): 683
Deunydd
papur
Lleoliad
In store
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.