On today's show we learn about obsidian. No, not the dragon glass from Game of Thrones - the volcanic glass used for millennia by prehistoric peoples around the world.
- Obsidian Wikipedia Entry: https://en.wikipedia.org/wiki/Obsidian
- Dictionary of Archaeology - Edited by Paul Bahn
- 2004 “Dictionary of Archaeology”. Penguin Reference, Penguin Books, London, England.