Surface materials associated with specific geomorphological sites are described, with a view to providing basic data for visiting scientists and other working in the Namib region. A fanglomerate overlying planed Palaeozoic and older rocks as well as an undescribed sandstone, is recognised as providing a datum and source of materials reworked during the Cenozoic evolution of the central Namib. Keywords: Namibia, Namib Desert, Kuiseb River, Gobabeb, Gaub River, Tsondab formation, geology, river catchment, climate, precipitation, rainfall, river channel, river discharge, geomorphology, geomorphological evolution.