One thing I like about these trips is that is really helps me straighten out the locations of these places in my head, as well as providing insight into how these things are found.  Klein Spitzkoppe is approximately 40 km west of the main Erongo Massif.  It is the smaller of a pair of small mountains surrounded by very arid, rocky terrain.  Near the mountains, you start to find shelters built by the miners-- in some cases using boulders as walls.