The R517 is a Regional Route in South Africa. Its norh-western terminus is at a junction with the R510. From there, heads south-east, running through the town of Vaalwater. From there it continues to Modimolle (Nylstroom), where it intersects with the R101. It exits the town and ends its route at an intersection with the N1.
Map of R517, South Africa
References
R517 road (South Africa) Wikipedia(Text) CC BY-SA