Trefil

Trefil is a small village in the county borough of Blaenau Gwent, south Wales. It lies at the top of the Sirhowy Valley, three miles northwest of Tredegar. The boundary of the Brecon Beacons National Park lies one mile to the north of the village.

The village is sited in the bottom of a broad valley which cuts through the moorlands between the Heads of the Valleys Road and the Dyffryn Crawnon valley to the north. At 409 meters above sea level, the Ordnance Survey recognise Trefil as the highest village in Wales. Trefil is served by a single cul-de-sac road which leaves the A465 Heads of the Valleys Road 1.5 miles to the south.