References 365% CONFIDENCEOverall confidence: 65%How well the pin's source and references back up its dates.Weighted average of how firmly 3 references, the source included, support the pin's start and end times; a reference counts half as much for every 180 days older than the newestShow all pins from 50% to 74% confidence
The first entry is always the pin's source. Overall confidence is a weighted average of how firmly each reference supports the start and end times used above; a reference counts half as much for every 180 days older than the newest.
- [1]50%youtube.com/watch?v=ccZlECnw33cyoutube.com· Posted Sep 15, 2026· Starts Jan 1, 2501 BC ✓· 33% of score
English Heritage[2] and Britannica[3] date the erection of Stonehenge’s sarsen circle and trilithons to approximately 2500 BCE.
- [2]85%A timeline of Stonehenge | English Heritageenglish-heritage.org.uk· Added Sep 15, 2026· 33% of score
English Heritage’s official Stonehenge timeline dates the sarsen circle and trilithon phase to around 2500 BCE.
- [3]80%Stonehenge - Sarsen Stones, Trilithons | Britannicabritannica.com· Added Sep 15, 2026· 33% of score
States the sarsen stones were brought from the Marlborough Downs and erected around 2500 BCE.[1]
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