Stonehenge fits together like Lego 🧱 Precision engineering at the 5000-year-old neolithic site has helped keep much of the structure upright at Stonehenge in Wiltshire, UK. One technique involved cutting pegs on top of the upright sarson stones, and corresponding grooves into the lintels, allowing them to fit together like Lego bricks. https://www.newscientist.com/video/2405902-stonehenge-science-how-archaeology-reveals-the-stone-circles-secrets/ #Stonehenge, #neolithic, #sarson, #engineering #