The remaining elephants became protected in the Addo Elephant Park, established in1931. However, the surviving elephants were known to be highly aggressive. In an attempt to mollify them, they were fed whole truck-loads of rotting oranges. All together this experiment was successful and the elephant population started to grow again. These special feedings were soon stopped, but still today the elephants are mad for oranges, and will smash any car if they sense the smell of their favourite citrus fruit in it. The elephant park also deserves a visitor's attention for some smaller creatures, like the flightless dung beetle, which has survived in South Africa only in this area.
The insects roll big breeding balls from elephant dung and transport them into subterranean breeding chambers. So a perfect recycling system has developed: the digested plants eventually become dung for the soil.