What is "dullstroom"

Dullstroom, also known as Emnotweni is a small town in Mpumalanga province, South Africa, and along with Underberg, it is one of South Africa's premier flyfishing destinations. The town features the highest railway station in South Africa at above sea level as well as at the foot of De Berg, the highest point in the province at . The town lies north of Belfast and some south-west of Lydenburg.