3Crimmins, Jason C. The Search for Solutions. Episode 9. Prod. Lyle Mays. PBS. 1979. Television.
"From this information we can project our intellects, and perhaps understand these ancestor."
Carleton Jones suggests that "these were Stone Age societies that for the most part we could describe as tribal. They built the megalithic tombs as part of their quest to understand the mysteries of life and death but they were in no position to have a better knowledge of the world than we do today." (Jones 252.)