Beitbridge South African boarder. Migrants from Zimbabwean side of the Limpopo river cross illegally into South Africa, near Maroi farm, 30 km west of Beitbridge. The Limpopo river is the natural border between Zimbabwe and South Africa. The two teenagers are both from Bulawayo. Their intention is to go to Johannesburg to find a job to sustain their family back home. Every month thousands of Zimbabweans cross the border illegally to get a better life in South Africa.