And they're not the only animals attracted to the clearing.
Forest buffalos and red river hogs are also regular visitors.
As are bongos, which are very difficult to see outside these clearings.
All these large forest animals have come here
to collect an essential element of their diet that lies buried beneath the mud.
And the elephant's trunk is the perfect tool for reaching it.
To get what they seek, the prospecting elephants must first blow away the covering layer of silt.
Satisfaction at last.
They're collecting a particular kind of clay that contains vital minerals scarce in their natural diet.
It may be mud but there's just nothing quite like it for enriching the blood.
The clay also helps to absorb the toxins found in many leaves that the elephants eat.
There are other benefits to coming here.
These clearings are the only places where the forest elephants can get together in such numbers.
When they return to the forest, they will have to go their separate ways once more.