Carn Gafallt

{{Short description|Protected area in Powys, Wales}}

{{Use dmy dates|date=April 2022}}

{{unreferenced|date=June 2015}}

{{Infobox mountain

| name = Carn Gafallt

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| elevation_m = 466

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| coordinates = {{coord|52.27|-3.55|display=title,inline}}

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| topo = Landranger 147;
Explorer 200W

| type = Marilyn

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Carn Gafallt is a Site of Special Scientific Interest in Breconshire, Powys, Wales, and a hill of 466 metres (1529 feet) which is a Marilyn.