Large natural semi-circular hollow in the Drakensburg Mountain Range, North of the Lesetho border, in Kwa-Zulu Natal. Takes its name from its shape! 

Geolocation
28° 19' 12", -28° 16' 12"
References

New Dictionary of South African Place Names by Peter E. Raper

Further Reading
https://www.drakensbergretreat.co.za/ https://www.safarinow.com/go/drakensbergmountainretreatbergville/