A hill on which Northcliff water tower is situated, some 10 km North-West of Johannesburg. Originates from Dutch, 'vulture hill', this name arouse from before the railway reached Johannesburg, up to a thousand wagons at a time were on route to cross the Vaal River, at Viljoensdrift. Draught sticken oxen that were left on the road, and thousands of vultures gathered to feed on them. Aasvoelkop was then far away from any habitation and these vultures inhabited this area!

Geolocation
-26° 5' 24", 27° 34' 12"
References

South African Place Names by Peter E. Raper