Quiz: The Pre-Historic Monuments of Britain

The stone circle complex at Avebury consists of three stone circles, the largest of which has a diameter of 420 metres. Building started around 3,000 years ago and there were many alterations over the next 2,000 years or so. Avebury lies in a landscape that is covered in prehistoric remains.

'Tri' - meaning 'three' and 'lith' meaning stones.

Like Avebury, Stonehenge was adapted and altered over the millenia. One of the most interesting features are the small "blue stones" which came all the way from South West Wales.

No one knows the function of Silbury Hill. Legend says it is the resting place of King Sil who lies buried underneath with a lifesize golden statue of him and his horse.

Arbor Low is sometimes described as the Stonehenge of the North. In reality it is a circle of 50 limestone blocks lying like a giant clock face. On a clear day there are some incredible views across the Peak District.

Scara Brae was discovered in almost perfect condition after the storm blew its sandy covering off. The houses are stone built and date from arounf 3,200 BCE. Each house has stone lined beds and a large structure that is thought to be a dresser of some sort.

Alexander Thom surveyed 250 stone cirlces in the British Isles and proposed that there were common distances used in each that were equivalent to 2.72 feet. He called this the megalithic yard. This theory has been generally been rejected by archaeologists in the years since.

Although Druids may have worshipped at places like Stonehenge they are much too modern to have anything to do with the building of the site. The connection between druids and Stonehenge was the work of Victorian antiquarians who were desperately looking for answers to explain such impressive structures.

Uffington White Horse lies across the crest of a hillside in Oxfordshire. It has been the subject of fierce debate as to how old it is but recent surveys have proven it to be Bronze Age in date. It is impossible to see clearly from the ground but aerial photography shows it to be an iconic symbol of a horse.

Grimes Graves are between 4,000 and 5,000 years old and are a series of shafts, some up to 40 feet deep where neolithic people dug to find flint. Remains that have been found in the mines show that they were dug using simple tools such as deer antler picks and shovels made from the shoulder bones of oxen.

Seahenge was discovered by a beachcomber and amateur archaeologist in 1998. It featured heavily in the national press after there were protests against its excavation and eventual removal to Flag Fen museum where it was conserved.