Smoking pipes are useful archaeologically because they are often made of durable materials, but have a brief useful life and styles are constantly changing, which make them good dating materials. Archaeological pipes in Africa are found to come in two general types, a bent angle pipe introduced from the New World and signifying a post-Columbian date, and water pipes whose origin is most likely earlier. These water pipes are found mainly in eastern and southern Africa and are associated there with cannabis use.
- smoking pipes
Available at: http://works.bepress.com/john_philips/2/