In the early 19th Century, it was fashionable for Europeans to collect wild animals from around the globe, bring them home and put them on display. One French dealer went further, bringing back the body of an African warrior. Dutch writer Frank Westerman came across the exhibit in a Spanish museum 30 years ago, and was determined to trace the man's history.
WARNING: This story contains an image some readers may find disturbing
A decorative chain-link fence in the national colours - blue, white and black - marks the grave of one of the most famous, but least enviable sons of Botswana: "El Negro". His resting place in a public park in the city of Gaborone, under a tree trunk and some rocks, is reminiscent of the tomb of an unknown soldier.