These almost perfectly round tools indicate sophisticated technology. The exact use of these tools is unknown, although suggestions have included games, ceremonial uses, and weights. They do not appear to have been used for grinding foodstuffs or other material. They…

During the Middle Holocene, local inhabitants heavily utilized coastal resources. Scrapers and choppers were very useful tools for processing shellfish, cutting wood, and smashing animal bone. Most stone choppers and scrapers from the La Jolla Tradition are made of quartzite.…

These stone bowls were found underwater many miles off shore. Their exact use is not known, but they indicate that the people of the Middle Holocene had ocean going boats. These bowls date to the La Jolla Tradition. During this…

Grinding tools were used to process many materials, not just seeds. The grinding table is called the netherstone, and the tool held in the hand is called the handstone. This netherstone and handstone are examples of ground stone tools. There…