Myarth

{{Short description|Hill (292m) in Powys, Wales}}

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

{{Infobox mountain

| name = Myarth

| photo = View east from Bwlch 3 - geograph.org.uk - 1069776.jpg

| photo_caption = Myarth viewed from the west

| elevation_m = 292

| elevation_ref =

| prominence_m = 164

| prominence_ref =

| parent_peak = Allt yr Esgair

| listing = Marilyn in Wales

| translation =

| language = Welsh

| pronunciation =

| location = Powys, Wales

| range =

| coordinates =

| grid_ref_UK = SO170208

| topo =

}}

Myarth is a hill in the Usk Valley in the county of Powys in South Wales, about 2 miles west of Crickhowell. Its summit at {{convert|292|m|ft}} is covered by trees, whilst the larger part of its slopes are also wooded. It is listed as a Marilyn. Myarth has an elongate form commonly ascribed to erosion by the west-to-east movement of the Usk Valley glacier during successive ice ages. The River Usk runs along the foot of the hill on its southern side. Myarth forms a prominent feature in many views over the Usk Valley and often features in commercial photography of the area.

Though it is ringed by public roads—the A40 to the north and a minor road to the south—there is no public access to the hill itself, which is in private ownership.Ordnance Survey 1:25,000 scale Explorer map sheet OL 13 Brecon Beacons National Park: eastern area

In 2016, the hill was used as the location for a segment of an episode of the motoring series The Grand Tour.