It is over 70,000 years ago: Imagine that you are a craftsperson who has recently polished a reddish stone about three inches long. You have carved a simple geo-metric design onto the stone, using the point of another stone. You are sitting in a cave in a cliff overlooking a lovely body of water that will later be called the Indian Ocean. It is a beautiful place to live. You have a cool breeze from the sea in summer and you build a small fire for warmth in the winter. A flowering shrub grows above your cave. Later, this place will be known as Blombos Cave in South Africa because of the name of the shrub. The carving that you made on the stone will later be known as the oldest example of a complex carving made by a human. Why would your people migrate from this area?​