One of the great wonders of the world - Stonehenge stands as a monument to those ancient builders who toiled and struggled to construct an incredible structure. The substantial remains of the great stone circle were erected between 3000 BC and 1600 BC. Who built Stonehenge and what it was built for are generally unknown but several theories have been suggested. Each monument was a circular structure, aligned along the rising of the sun at the midsummer solstice.

The first ‘Stonehenge’ consisted of a circular bank and ditch with a ring of 56 wooden posts, which are now known as Aubrey Holes. Later monuments all used, and reused, the great stones we see today, which were brought from some distance away. The final phase comprised the construction of an outer circle of huge standing stones – super-hard sarsens, from the Marlborough Downs.

These were topped by lintels, forming a continuous ring. Inside this stood a horseshoe of five still larger constructions, known as trilithons: pairs of uprights with a lintel across each. All the stones were connected using mortise-and-tenon and tongue-and-groove joints. Smaller bluestones, from the Preseli Mountains in South Wales, were arranged in a ring and a horseshoe within the great circle and horseshoe of sarsen stones. In an earlier phase, these bluestones had been erected in a different arrangement.

There has always been intense debate over quite what purpose Stonehenge served. Certainly, it was the focal point in a landscape filled with prehistoric ceremonial structures. It also represented an enormous investment of labour and time. A huge effort and great organization was needed to carry the stones tens, sometimes hundreds of miles by land and water, and then to shape and raise them. Only a sophisticated society could have mustered so large a workforce and the design and construction skills necessary to produce Stonehenge and its surrounding monuments. Stonehenge’s orientation in relation to the rising and setting sun has always been one of its most remarkable features. Whether this was simply because the builders came from a sun-worshipping culture or because – as some scholars have asserted – the circle and its banks were part of a huge astronomical calendar, remains a mystery. What cannot be denied is the ingenuity of the builders of Stonehenge. With only very basic tools at their disposal, they shaped the stones and formed the mortises and tenons that linked uprights to lintels. Using antlers and bones, they dug the pits to hold the stones and made the banks and ditches that enclosed them. There are direct links with the people who built Stonehenge in their tools, artifacts, pottery and even the contents of their graves. Some of these are displayed in the museums at Salisbury and Devizes.

Burial mounds, possibly containing the graves of ruling families, are also integral to the landscape. Neolithic long barrows and the various types of circular barrows that came after are still visible. So too are other earthworks and monuments. Some, such as the long oval earthwork to the north, the Cursus – once thought to be a chariot racecourse – remain enigmatic. You can visit the Cursus and other parts of the Stonehenge landscape.

Woodhenge, two miles to the north east, was a wooden oval-post structure, also aligned with the summer solstice sun. It is believed to be contemporary with the first phase of Stonehenge. Now a World Heritage Site, Stonehenge and all its surroundings remain powerful witnesses to the once great civilizations of the Stone and Bronze Ages, between 5,000 and 3,000 years ago.