Sasolburg is a large industrial town in the far north of the Free State province of South Africa. Sasolburg is further sub-divided into three areas: Sasolburg proper, Vaalpark and Zamdela (a 'township' or area formerly reserved for Black people). Most White residents of Sasolburg speak Afrikaans as a first language, while most Black people speak Sesotho as a first language. Sasolburg is at a high altitude with a fairly dry climate and large seasonal temperature variation. It is situated near the Vaal river and is not far from the Vaal dam where excellent windsurfing spots can be found. Despite all the industrial activities, Sasolburg has a fantastic environmental awareness program & is exceptional in its wealth of trees. Some 72000 trees have been planted in Sasolburg, & the town boasts almost 12000 oak trees, including 26 different oak variants.