There are many waterfalls in the Mpumalanga province of South Africa, such as the Berlin Falls, but these are, at 92 metres, the highest.
Lisbon Falls are located near Graskop on what is known, for good reason, as the Panorama Route.
The falls are on the Lisbon River and are "plunge" type falls in that the water falls vertically without making contact with the rock surface.
The falls are named after the capital city of Portugal and there is also a large farm named "Lisbon" nearby.
Road Tripping South Africa - Author: MapStudio - Year Published: 2014 - Page: 161
Southern Africa from the Highway - Author: AA RSA - Year Published: 1991 - Page: 61