Related Clues:
- Theater ÷ 1 = Neolithic
- When forging started
- Primeval
- When metal-casting started
- "The Flintstones" setting
- Period in human history
- Old time?
- Early metalworking period
- Time when people got super into metal?
- 'Alley Oop' setting
- Paleolithic time
- It ended in Britain with the Roman Conquest
- First millennium B.C., roughly
- Era of ignorance
- When bronze was supplanted in toolmaking