Beitbridge. Two border jumpers cross the Limpopo through a small dam, near Maroi farm, 30 km west of Beitbridge. The Limpopo, a very broad and shallow river, is the natural border between Zimbabwe and South Africa. Their intention is to go to Johannesburg to find a job to sustain their family back home. Because of the situation in Zimbabwe, every month thousands of Zimbabweans cross the border illegally looking for a better life in South Africa.