sentences:  The Middle Stone Age Sangoan industry occupied southern Africa in areas where annual rainfall is less than a metre (1000 mm; 39.4 in).The contemporary San and Khoi peoples resemble those represented by the ancient Sangoan skeletal remains.The Late Stone Age in South Africa corresponds to the later phase of the Sangoan, beginning about 50,000 years ago, followed by Lupemban culture, from about 30,000 to 12,000 years ago (also known as "Second Intermediate", between Middle and Late Stone Age.