Silbury Hill near Avebury in Wiltshire, England.

- Image ID: E68M58
Silbury Hill near Avebury in Wiltshire, England.
Chris Lock / Alamy Stock Photo
Image ID: E68M58
Silbury Hill was built in the late Neolithic period, around 2400 BC. It is 30 metres high and 160 metres wide. Evidence suggests that it was not originally conceived as the monument seen today, but built up in stages over time. Approximately 500, 000 tons of material were used, mostly chalk quarried and cleared from surrounding terraces and ditches, involving an estimated 4 million man-hours of work. Its purpose and meaning are unknown. This photograph was taken from nearby Waden Hill.
Location: Silbury Hill, Wiltshire, England, UK.