2400s
2300s
2200s
2100s
2000s
2500 - 2000 Ring of Brodgar
2500 Megaliths in Scotland. Stonehenge, England.
2500 Climax of Bell breaker culture, Europe.
2470 - 2000 Woodhenge, Wiltshire UK
 
 
- 2000s Seahenge UK