The first, which we may call the Fort, consists of a line of wall, in parts double, defending the more accessible parts of the eastern and south-eastern end of the hill or kopje, which is about 500 feet high, and breaks down on its southern side in a nearly vertical sheet of granite. The walls, which in some places are thirty feet high, are all built of small trimmed blocks of granite such as I have already described, without mortar, but neatly fitted together. They are in excellent preservation, and are skilfully constructed in a sort of labyrinth, so as to cover all the places where an enemy might approach. From the openings in the wall, where doors were probably placed, passages are carried inward, very narrow and winding, so that only one person at a time can pass, and completely commanded by the high wall on either side. Everything speaks of defence, and everything is very well adapted, considering the rudeness of the materials, for efficient defence. There is no sort of ornament in the walls, except that here and there at the entrances some stones are laid transversely to the others, and that certain long, thin pieces of a slaty stone, rounded so that one might call them stone poles--they are about five to seven feet long--project from the top of the wall. Neither is there any trace of an arch or vaulted roof. None of what look like chambers has a roof. They were doubtless covered with the branches of trees. Very few objects have been found throwing any light on the object of the building or its builders, and these have been now removed, except some small pieces of sandstone, a rock not found in the neighbourhood, which (it has been conjectured) may have been brought for the purposes of mining.