Kasane, Botswana
It is pitch black even though the Kalahari sun has been up for 4 hours. The temperature is approaching 50C. The metal surrounding me is almost too hot to touch. I'm lying on my back, working by head torch light. The feeling of claustrophobia is overwhelming, I've not felt this enclosed since misguidedly accepting British Coal's corporate hospitality invite to go down a coal mine!
After 45 minutes of fumbling, poking and groping (it's not what you think Carol!...