Beside Little Foot, the most important discovery in this cave is the skull of Mrs Ples, and as the guide was telling us Mrs Ples is probably Mr Ples, however the name cannot be changed as names given to fossils cannot be changed. The other important discovery from the caves is the proposed Homo gautengensis fossil. So these three fossils among others found int he caves make Sterkfontein a very unique place.
Before your guided tour of the caves, you get a chance to wonder around a really nice museum/exhibit which displays casts of most of the important fossils that have been found in and around the Cradle of Humankind. This exhibit is great but is far smaller that the Maropeng Visitors Center Museum, so the combined ticket is well worth it. Needless to say, to go through the caves it is advised that you be relatively fit as you descend pretty far and you then naturally have to ascend out of the caves. Claustrophobic people are also advised that perhaps this tour should be avoided as there are some rather tight spaces that you have to go through. That said, it is worth going through a little discomfort (if you can) as Sterkfontein is an experience that is really once in a lifetime.
The Elephant limestone rock formation
After the lake is where you begin your ascent and then you exit again into the sunlight where your tour wraps up with a tribute to the late Dr Robert Boom who discovered the Mrs Ples fossil, among many others such as the Taung Child, and the species Paranthropus robustus. All in all a fantastic time and a trip I would highly recommend.
One view of the Underground Lake