Largest prehistoric structure everdiscovered in Britain was indeed man-made

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When a series of deep pits were discovered near the world heritage site of Stonehenge last year, archaeologists excitedly described it as the largest prehistoric structure ever found in Britain – only for some colleagues to dismiss the pits as mere natural features.

Now scientific tests have proved that those gaping pits, each aligned to form a circle spanning 1.2 miles (2km) in diameter, were definitely human-made, dug into the sacred landscape almost 4,500 years ago.

The structure appears to have been a boundary guiding people to a sacred area, because Durrington Walls, one of Britain’s largest henge monuments, is located precisely at its centre. The site is 1.9 miles north-east of Stonehenge on Salisbury Plain, near Amesbury in Wiltshire.

Each pit is about 10 metres across and 5 metres deep, and science supports the theory that the neolithic people who constructed Stonehenge also dug this monument.

Source - https://www.theguardian.com/science/2021/nov/23/new-tests-show-neolithic-pits-near-stonehenge-were-humanmade