Vast neolithic circle of deep shafts found near Stonehenge

Archæologists have discovered a 2-kilometre ring of prehistoric shafts about 3 kilometres from Stonehenge. There are at least 20 of the 4,500-year-old shafts, each more than 5 metres deep and 10 metres in diameter. The startling discovery, in one of the world’s most studied archæological landscapes, comes thanks to modern techniques including ground-penetrating radar.