Erongo: See
3 Cape Cross seal colony, 44 km north-west of Hentiesbay
Moon Landscape, an area of unreal results of the erosion of the Swakop River, 25km east of Swakopmund. The road there further extends to the Welwitschia Plains which contain one of the largest of these plants that exist, estimated to be 1,500 years old. The entire trip has roadside markers every now and then to explain selected plants, artefacts, and geological features. However, the descriptions have disappeared or become illegible. Download them in advance, for instance from here or use mobile Internet access, the round trip has cell phone coverage. The road is rough and crosses the sandy Swakop. You will feel sorry for your car. If you don't have the nerves, come in a 4x4, or do the trip by joining one of the frequent organised tours that start in Swakopmund.
4 Rössing Uranium Mine, one of the largest open-pit uranium mines in the world. There is a guided tour every first Friday of the month, departing from Swakopmund. The machinery shown is impressive, particularly for kids, but you are also forced to watch a boring PR movie. Tickets at the Swakopmund Museum.