Tsodilo Hills is a spiritual outdoor art gallery, showcasing more than 4,000 ancient San Bushmen rock paintings. There are around 400 sites depicting hunting scenes, ritual dances and typical safari animals. Some rock art dates back more than 20,000 years and archaeologists have ascertained that people lived in this area as far back as 100,000 years ago. The San Bushmen believe this sacred area is the site of the first creation of man and a resting place for spirits of the dead. Not surprisingly, this is a UNESCO World Heritage Site. Visitors can expect to hike the three main hills, with the assistance of local guides. There is a basic campsite and a small but informative museum on site.