Dyfnant Forest is a remote forest in northeastern-central Powys, Wales. Dyfnant Forest lies to the west of the B4395 road, a road which stems north from the A458 road and is between the valleys of the Afon Twrch to the west and the Afon Efyrnwy to the east, north of the village of Llangadfan. It is described by Lonely Planet as being "where a well-si…Dyfnant Forest is a remote forest in northeastern-central Powys, Wales. Dyfnant Forest lies to the west of the B4395 road, a road which stems north from the A458 road and is between the valleys of the Afon Twrch to the west and the Afon Efyrnwy to the east, north of the village of Llangadfan. It is described by Lonely Planet as being "where a well-signposted maze of forestry tracks culminates in one enormous hill before descending rather spectacularly toward Lake Vyrnwy". Dyfnant Forest has an area of 2,430 hectares located at the periphery of the Cambrian Mountains, just south of Lake Vyrnwy.