The Great Winterberg is an extensive east–west mountain range lying immediately north of the small towns of

Bedford Bedford is a market town in Bedfordshire, England. At the 2011 Census, the population was 106,940. Bedford is the county town of Bedfordshire and seat of the Borough of Bedford local government district. Bedford was founded at a ford (crossin ...

Adelaide Adelaide ( , ; ) is the list of Australian capital cities, capital and most populous city of South Australia, as well as the list of cities in Australia by population, fifth-most populous city in Australia. The name "Adelaide" may refer to ei ...

and

Fort Beaufort Fort Beaufort ( Xhosa: iBhofolo), officially renamed KwaMaqoma in March 2023, is a town in the Amatole District of South Africa's Eastern Cape Province, and had a population of 25,668 in 2011. The town was established in 1837 and became a mun ...

in the

Eastern Cape The Eastern Cape ( ; ) is one of the nine provinces of South Africa. Its capital is Bhisho, and its largest city is Gqeberha (Port Elizabeth). Due to its climate and nineteenth-century towns, it is a common location for tourists. It is also kno ...

South Africa South Africa, officially the Republic of South Africa (RSA), is the Southern Africa, southernmost country in Africa. Its Provinces of South Africa, nine provinces are bounded to the south by of coastline that stretches along the Atlantic O ...

. Elevation on average is about 1800 metres above sea-level. The Great Winterberg Peak north of Adelaide rises to 2371 metres, high enough to be occasionally covered in snow. The underlying geology consists of

shale Shale is a fine-grained, clastic sedimentary rock formed from mud that is a mix of flakes of Clay mineral, clay minerals (hydrous aluminium phyllosilicates, e.g., Kaolinite, kaolin, aluminium, Al2Silicon, Si2Oxygen, O5(hydroxide, OH)4) and tiny f ...

s and

sandstone Sandstone is a Clastic rock#Sedimentary clastic rocks, clastic sedimentary rock composed mainly of grain size, sand-sized (0.0625 to 2 mm) silicate mineral, silicate grains, Cementation (geology), cemented together by another mineral. Sand ...

s of the Beaufort Series of the Karoo System, frequently with

dolerite Diabase (), also called dolerite () or microgabbro, is a mafic, holocrystalline, subvolcanic rock equivalent to volcanic basalt or plutonic gabbro. Diabase dikes and sills are typically shallow intrusive bodies and often exhibit fine-grain ...

intrusions. Rainfall on the southern slopes (facing the sea) is fairly high. A notable pass over the range is the

Katberg Pass Katberg Pass is a mountain pass situated in the Eastern Cape province of South Africa, on the R351 between Seymour Seymour may refer to: Places Australia *Seymour, Victoria, a township ** Seymour railway station * Electoral district of Se ...

built by

Andrew Geddes Bain Andrew Geddes Bain (baptised 11 June 1797 – 20 October 1864), was a Cape Colony geologist, road engineer, palaeontologist and explorer. Life history The only child of Alexander Bain and Jean Geddes, both of whom died when Bain was still a ...

in 1860–64.

References

*Standard Encyclopaedia of Southern Africa (NASOU 1973) Mountain ranges of the Eastern Cape {{EasternCape-geo-stub