Stonehenge lies on Salisbury Plain in the county of Wiltshire, England. The whole area is regarded as mystical, with an abundance of ley lines, and is widely accepted as the centre of the crop circle phenomenon.

Stonehenge itself was consrtucted in three stages. The first began in about 3000BC, when a circular ditch was dug around the site and a raised bank two yards high and 106 yards in diameter was formed. Just insice the bank, 56 shallow holes were dug and then refilled and the first rock - the 'Heel Stone', was introduced.

This was positioned to mark the axis of sunrise at the summer solstice. Two smaller entrance stones were put in place, then 40 wooden posts, marking positions of the sun, were erected.

In around 2000BC, a two mile avenue to the River Avon was created. From southwest Wales, the builders imported 82 'bluestones' weighing over four tonnes each. To reach the site they would have had to travel 240 miles over land and water.

These Bluestones were used to construct a double circle inside the site. It is believed the builders never finished this design because they already had the idea to erect the third, and most impressive, phase.

This started in aroun 1900BC, with the selection of 75 loose blocks of sandstone, known as sarsens, from Avebury, 20 miles away. Using rollers and ropes, these 25-tonne, 17-feet-long rocks were pulled to the site where they were then shaped and lifted into upright positions.

The architectural detail of this stage is phenomenal, and the lintel stones that cap the pillars are actually curved to fit in the large circle. The Welsh bluestones were repositioned, and the structure was complete.

In each stage, the stones were placed at specific points demonstrating the position of the sun and moon at important times. The site was in continual use until about 1000BC, but we still do not know exactly what it was used for.

What are your thoughts on Stonehenge? Was it man made or an Alien creation? What is your explinations for it?