Another Neolithic-age structure, built of timber, located less than 2 miles north-east of the famed Stonehenge. Despite the fact that the wood is long gone, archeologists uncovered postholes grouped in six concentric oval rings, the largest of which is around 40 by 43 meters. The holes were probably used to support wooden beams that carried weight off the ground. Woodhenge was built about 5,000 years ago during the same time as Stonehenge. But while Stonehenge is a UNESCO World Heritage Site, Woodhenge is only protected because it's on private land. It could be destroyed or damaged at any time if its owners decide to build there again. In conclusion, Woodhenge is made of wood and therefore it's not stone nor bronze.