Only 5 minutes from Catkin Lodge is Stonehenge which is of course the best known of all the stone circles throughout the world. This ancient monument of huge stones solitarily standing on the Salisbury Plain in Wiltshire, England has captured imaginations for centuries. In addition to the impressive stone circles (some of which are almost 7 metres high) there are other very interesting features within this site. "The Avenue" which consists of two banks about twelve metres apart forms a 500 metre approach to the site and a similar structure known as "The Cursus" stretches away northward. Theories about who built it have included the Druids, Greeks, Phoenicians, and Atlanteans. Speculation on the reason it was built range from human sacrifice to astronomy. Investigations over the last 100 years have revealed that Stonehenge was built in several stages from 2800 - 1800 BC. It seems to have been designed to allow for observation of astronomical phenomena - summer and winter solstices, eclipses, and more.