Rhosydd Castell-du & Plas-y-bettws is an area of fen-meadow and grassland that is a Site of Special Scientific Interest in Carmarthen & Dinefwr, Wales.
See also edit
References edit
- "Rhosydd Castell-du & Plas-y-bettws" (PDF). Cyfoeth Naturiol Cymru. Retrieved 1 May 2021.
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