I had often thought that they must be around in the Berg (since they certainly are here in the Magaliesberg). What I have heard is second hand information, but apparently someone did encounter the remains of a baboon and saw leopard droppings in Lower Injasuthi Cave. Also, apparently one of the rangers and his girlfriend where lying in their sleeping bags in Dead Dog Cave when a leopard literally walked in, but left without incident! So, it seems remote areas with good game, like Injasuthi, are home to some leopards.