The ancestors of the hunter-gatherer San people are considered to have been the first inhabitants of what is now Botswana and South Africa.
The historical presence of the San in Botswana is particularly evident in northern Botswana's Tsodilo Hills region.
In this area, stone tools and rock art paintings date back over 70,000 years and are by far the oldest known art.
The San were traditionally semi-nomadic, moving seasonally within certain defined areas based on the availability of resources such as water, game animals, and edible plants.
Women are mainly involved in the gathering of food, but may also take part in hunting. Droughts may last many months and waterholes may dry up. To get water this way, a San scrapes a deep hole where the sand is damp.
Large amounts of time are spent in conversation, joking, music, and sacred dances.
As of 2010, the San population in Botswana numbers about 50,000 to 60,000.
From the 1950s through the 1990s, the San switched to farming because of government-mandated modernisation programs.
Early spring is the hardest season: a hot dry period following the cool, dry winter.
Most plants still are dead or dormant, and supplies of autumn nuts are exhausted.