Possible Clues:

• Ancient supplier of light mostly ignited here in Rome?
• Relating to the later Stone Age
• Break into Chile, just like the old days?
• Of New Stone Age
• Stone Age period
• From the late Stone Age
• With 40-Down, late Stone Age period
• Wandering into Chile in bygone era
• Belonging to late Stone Age
• Mostly gas-fired, this Latin period