Some Stonehenge rocks were in place 'long before humans'

UK’s Stonehenge is shrouded in many mysteries, but some of them may have just been solved, reports Sky News.

Archaeologist Mike Pitts suggests that largest rocks on the site were likely there long before humans and may have served as the inspiration for further development on Salisbury Plain, notes The Times.

Two of the pieces in question are the 60-ton heel stone and a rock located in the circle’s central area.

Pitts located large, backfilled holes near each, suggesting they were excavated and positioned upright.

“It’s possible that at the end of the ice age we had two really large visible sarsen boulders, probably the two largest on Salisbury Plain, close together on the midsummer sunrise-midwinter sunset axis,” he said of those holes.

He further notes that neither stone appears to have been altered in any way that would have made them easier for transportation from elsewhere.

While those multi-ton rocks appear to have been native to the site, the bulk of the massive stones are still believed to have been dragged from their distant places of origin.