A raised area accessible to the smaller birds but not the ostriches or ungulates. The marabous seemed to be king of the hill, and were sat there all day.
This is basically the Savannah of Grumpy Things - Southern White Rhinos, Grant's Zebras, Common Eland and Ostrich being the headliners.
The more peaceful smaller antelopes and giraffes have a larger, grassy savannah paddock.