Campbell is a small town situated on the edge of the Ghaap Plateau in the Northern Cape province of South Africa. It is located 48 km east of G…Campbell is a small town situated on the edge of the Ghaap Plateau in the Northern Cape province of South Africa. It is located 48 km east of Griquatown on the N8 road. It was originally known as Knovel Valley and then Groote Fontein, but was renamed in honour of the Reverend John Campbell who visited the Cape Colony in 1813.