126 THE ZWARTEBERGEN 



The Zwartberg anticline has at least as complex a 

 structure as that of the Langebergen, and is also over- 

 folded in many places (see Plate V.), especially between 

 Prince Albert and Klaarstroom ; the overfolding affects 

 both the north and south flanks. On the north the 

 later rocks, from the Bokkeveld to the Dwyka, dip south 

 towards the mountains near Prince Albert (see Fig. 4), 

 and, as was described in the account of the Cango series, 

 the Table Mountain sandstone dips in places below the 

 latter. Where the Gamka Kiver traverses the moun- 

 tains there is a synclinal fold bringing in the Bokkeveld 

 beds in the middle of the range, thus dividing it into 

 two distinct anticlinal ridges for some ten miles. The 

 highest point on the range is the peak near Seven Weeks 

 Poort, 7,627 feet ; the curious tower-shaped peak called 

 Tover Kop is some 400 feet lower. Near Klaarstroom 

 the Zwartebergen decrease considerably in width on 

 account of the northern portion of the range separating 

 from the southern and plunging below the Bokkeveld 

 beds. 



Between the Zwartebergen and the Outiniquas lies 

 the great ridge called the Karnmanassie Mountain, a 

 bow-shaped anticline of sandstone with the concavity 

 towards the north ; the east and west ends of the axis 

 pitch in those directions. Between the Kammanassie 

 and the Outiniquas there is a much-folded ridge of 

 sandstone that diverges from the main range near the 

 Montagu Pass, and extends eastwards to form the 

 Kouga Mountains. 



The Table Mountain and Bokkeveld series, of which 

 the country between Willowmore and Knysna chiefly 



