The eastern part of the Witwatersrand, known as the East Rand, and extends from Germiston in the west to Springs in the east, and south down to Nigel, and includes the towns of Boksburg, Benoni, Brakpan, Kempton Park, Edenvale, and Bedfordview. The natural vegetation of this region consists of Highveld grassland on gently rolling terrain. It also includes the catchment of several rivers, seasonal wetlands and permanent pans which ensure a high diversity of waterbirds.