Caves were only used when they were accessible and allowed observation over approaching and surrounding area and also room was provided at entrance to shelter.
[2] Throughout 1882 to 1915, the Imperial German colonial administration troops were interested in caves, as they provided in remote areas water supply for transport animals.
[2] As years passed, landowners became interested in caves, as due to WW1 and WW2 nitrate was regarded a strategic resource and could no longer be used in fertilizers.
Nitrate minerals were replaced by bird guano, but only a small quantity was used locally, the rest was exported.
A problem with researchers from other countries is that they do not ensure that their results and reports are available in Namibia and so valuable information is then lost.