Rhos Fawr

{{Short description|Mountain (660m) in Powys, Wales}}

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

{{Infobox mountain

| name = Rhos Fawr

| photo = Great Rhos.jpg

| photo_caption = The summit plateau of Rhos Fawr

| elevation_m = 660

| elevation_ref =

| prominence_m = 379

| prominence_ref =

| parent_peak = Plynlimon

| listing = Marilyn, Hewitt, Nuttall, county top (Radnorshire)

| location = Powys, Wales, historic county Radnorshire

| range = Cambrian Mountains

| coordinates = {{coord|52.2671|-3.1998|type:mountain_region:GB|display=inline}}

| grid_ref_UK = SO182639

| topo = OS Landranger 148

}}

{{GB summits start}}

{{GB summits entry|Name=Black Mixen|Height={{convert|650|m|ft|0}}|Gridref=SO196643|Status=Hewitt, Nuttall}}

{{GB summits entry|Name=Bache Hill|Height={{convert|610|m|ft|0}}|Gridref=SO213636|Status=Hewitt, Nuttall}}

{{GB summits entry|Name=Whimble|Height={{convert|599|m|ft|0}}|Gridref=SO205626|Status=Dewey}}

{{GB summits entry|Name=Great Creigiau|Height={{convert|646|m|ft|0}}|Gridref=SO198636|Status=Buxton & Lewis}}

{{end}}

Rhos Fawr is a mountain summit in the Radnor Forest (Mid Wales), a rather isolated dome of hills to the north of the village of New Radnor. The local rocks are sedimentary shales and mudstones with some Silurian limestone. With a height of {{convert|660|m|ft}}, it is the highest point in the Radnor Forest and the historic county top of Radnorshire.

The summit is located on a broad heathery plateau, which is separated from Black Mixen: the eastern plateau summit, by the cwm of Harvey Dingle. To the west is Drygarn Fawr and Gorllwyn, to the northwest Plynlimon, to the north Beacon Hill and the Clun Forest (Shropshire), and to the south the Black Mountains.Nuttall, John & Anne (1999). The Mountains of England & Wales - Volume 1: Wales (2nd edition ed.). Milnthorpe, Cumbria: Cicerone. {{ISBN|1-85284-304-7}}.

There is a prominent trig point at the summit, and a very useful landmark for walkers on the broad and featureless summit plateau.