Davula, Diepdale, Diepgezet, and Dundonald are all regions of Highveld and Cosmos  neither in the Albert Luthuli Local Municipality nor in Gert Sibande District Municipality.
Diepdale is a town in Gert Sibande District Municipality in the Mpumalanga province of South Africa. 
Diepgezet is a deserted town in Gert Sibande District Municipality in the Mpumalanga province of South Africa. 
