A sound understanding of the various factors influencing and associated with the formation of sinkholes
or subsidences on dolomite land is essential for the selection of appropriate rehabilitation methods. The
investigation and rehabilitation of numerous sinkholes and subsidences located on dolomite in the East
Rand of South Africa, created an opportunity to develop a broad based understanding of different karst
environments, their susceptibility to sinkhole and subsidence formation and best practice rehabilitation
methods. This paper is based on the guidelines developed whereby the geological model of the sinkhole
or subsidence is used to recommend an appropriate rehabilitation method. Nine typical geological
models with recommended rehabilitation methods are presented in this paper.