The Afon Mynwy, known in English as the River Monnow, is a classic Welsh border river whose very name translates to "swift water" — an apt description for this lively, freestone river that winds through some of the most picturesque countryside in the Welsh Marches. Stretching approximately 42 miles (68 km) in length, the Monnow flows through southwest Herefordshire and eastern Monmouthshire before joining the River Wye just south of the historic town of Monmouth. For much of its course, the river forms the natural boundary between England and Wales, lending it a unique character that draws anglers from both nations. The Monnow is perhaps best known as a brown trout river, offering the kind of intimate, wild fishing experience that defines the best of British river angling.