They are composed of Table Mountain Sandstone and attain a maximum height near McGregor and Riviersonderend as Pilaarkop (). The ranges are rich in fynbos flora and experience a typical Mediterranean climate.
The mountain ranges are formed from Table Mountain Sandstone and stand at their tallest points near McGregor and Riviersonderend, designated as Pilaarkop (). These ranges are characterized by a diverse array of fynbos flora and exhibit a Mediterranean climate.