The R621 is a Regional Route in South Africa. Its north-wester terminus is the N11 between Ladysmith and Newcastle, KwaZulu-Natal. It initially heads east, to Dannhauser. Leaving the town, it heads south-east, and passes through Hattingspruit before ending at an intersection with the R68 just north of Dundee.
Map of R621, Hattingspruit, 3081, South Africa
References
R621 road (South Africa) Wikipedia(Text) CC BY-SA