A teenager was injured after falling about nine metres off the Karkloof Falls near Howick in the KwaZulu-Natal Midlands on Saturday.
Netcare 911 spokesperson Shawn Herbst says the 13-year-old boy sustained moderate injuries and was hospitalised.
This was the second incident reported at the waterfalls in the past week.
On Wednesday, a 14-year-old boy fell several metres down the Karkloof Falls while on an outing with friends.
The teenager was removed from the water by members of the public, who had also alerted emergency services.
He was airlifted to a Pietermaritzburg hospital after a three-hour rescue operation.