Stonehenge
Source: me

Unless you have lived at the north pole and have never met with any people, you must have heard of Stonehenge. Stonehenge is the Prehistoric monument built by an unknown race out of huge rocks and laid in a circle. It is located 8 miles west of Amesbury in England on A303. It is quite mysterious indeed and many think it is some sort of ancient calendar. They also think that religious ceremonies may have taken place there. It is believed to be over 5000 years old. But most of us know this already.

Woodhenge, yes Woodhenge, is located 2 miles north of Amesbury in England on A345. It is really not that far from Stonehenge. It is another mysterious place that predates Stonehenge.

Here are some comments by a scientist at the United States Department of Energy concerning Archaeoastronomy and henges and woodhenges appear in several areas.

Response #: 1 of 1
Author: samuel p bowen
There are a number of good books on sites like Stonehenge. There is a Hopi
Indian site, the Nasca lines in Peru, and a woodhenge in England near
stonehenge that were all used by the ancients to predict the coming of
spring and planting times. Look up a number of good books. The Adler
Planetarium has lots of good data. If you can visit there you should find
lots of interesting things.

The best explanation is that rising and setting of the Sun and Moon at
different times of the year were determined by the lithes as determined from
various points of reference. As best as we know it was a calendar and was
used to predict times of the year for religious or agricultural purposes.
You could make similar predictions of where the Sun would rise, set, or how
high it would be at noon for yourselves and make your own calendar.

Woodhenge was discovered in 1999 by British Archaeologists. It lies at a distance of only 20 miles from Stonehenge. Could it be that the same people that built Stonehenge had previously built Woodhenge? It is believed that the wood used to construct Woodhenge was Oak or Red Cedar but only holes remain now, since the wood has rotted away long ago. Although the monument was wood, two circles of stone were in the middle. In the center of each circle large holes were found that housed huge timbers. No one knows how high these timbers extended but the depth of the hole was about 6 feet, therefore the maximum height of the timbers could have been three to four times that size assuming that they had the same thickness right to the top. If they tapered that could have been even higher. The theory is that these holes represent a woodhenge similar to Stonehenge, however this could be wrong and these could have been supports for some sort of buildings, but it doesn't seem so, because of the placemen of the holes. It is also believed that many more of these structures existed in ancient times like the one in Stanton Drew which is located a few miles from Bristol, England

It seems that woodhenges were not confined just to the English countryside, the Americas also experienced the building of woodhenges. A woodhenge was discovered at Cahokia in Illinois, USA. It is believed that the priests could use the henge to observe the rising of the sun and that the whole structure was a sort of giant calendar that was used to calculate the seasons. Cahokia contained at least five known woodhenges.