You guys are too kind. As you can see though its really all down to the posters on this board who have helped me along the way. For me personally it shows why you should post your work in progress on this forum. The advice has been invaluable.

Very South African, where, I believe some of the oldest prehistoric caves have been discovered!
You are right about the caves. Latest archeological theory (backed up by DNA) is that humanity started in Southern Africa. So all you mappers are really South Africans, you just dont know it .

Thanks again.