Breidden Hill

[1] Footpaths which lead up to the summit provide excellent 360 degree views over Powys and over the border with England to the Shropshire Plain.

On 27 June 2018, a wildfire broke out on Breidden Hill, destroying an area of grassland close to Rodney's Pillar.

Beginning around 1789, for many years members of the Breidden Society, founded by John Dovaston (1740–1808), met near Rodney's Pillar for an annual festival of food, drink, poetry, and song; records of their meetings for 1809–15 are preserved at the Houghton Library of Harvard University (MS Eng 1168).

This rock was intruded into the mudstones of the surrounding Stone House Shales Formation in the form of a laccolith during the Ordovician period.

The hills are largely devoid of superficial deposits though the low ground between the summits is mantled with glacial till.