"All my pictures are taken by hand without using camera traps," Hannes said.
The footage was obtained using remote camera traps which are triggered by motion.
In a 12-month period in 1991-92, data were collected from camera traps placed on trails throughout the park.
But the camera traps produce far more than just a rogue's gallery of passers-by, researchers say.
Hunting has played an important role in development of camera traps, since hunters like to use them to scout for game.
By using camera traps, the well-being and survival rate of animals can be observed over time.
One of the most important things to consider when setting up camera traps is choosing the location in order to get the best results.
The camera trap was also indiscriminate, but the results were a delightful surprise.
With a camera trap, there is no need to stand around in the bush waiting for a celebrity animal to show.
After the fourth human kill, forest department officials installed camera traps to identify the killer.