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Latitude: 52.9348 / 52°56'5"N
Longitude: -4.0412 / 4°2'28"W
OS Eastings: 262910
OS Northings: 339443
OS Grid: SH629394
Mapcode National: GBR 5T.M2V1
Mapcode Global: WH55M.WHTF
Entry Name: Cei Tyddyn Isa
Scheduled Date: 17 March 1980
Source: Cadw
Source ID: 3230
Cadw Legacy ID: ME108
Schedule Class: Industrial
Category: Quarry
Period: Post Medieval/Modern
County: Gwynedd
Community: Penrhyndeudraeth
Traditional County: Merionethshire