But Les could do more than merely identify its original owner. Its size, and the fact that it occurred in just one pile, revealed that it was made by a lone bull elephant. Les picked up a handful and pulled out thick, undigested pieces of bark - evidence, he said, of a middle-aged elephant with badly worn molars. We also learned how to walk in lion country. Anyone can walk in lion country, of course, but the professionals do it without being eaten. 'If we stumble upon a lion,' explained Les, 'we'll get out of the area by moving slowly backwards. We will not run. If we run, we have a 100 per cent chance of being killed.'