A vast, mysterious complex dating back more than 5,600 years has been unearthed just 1.5 miles from Stonehenge, British archaeologists have announced. The finding in Wiltshire reinforces the theory that Stonehenge was a sacred monument and suggests the entire region was ritually active hundreds of years before the enigmatic stone circle was erected. Found during excavations ahead of the construction of a new Army Service family accommodation, the 650-foot-diameter complex is known as a "causewayed enclosure." It consists of more than 3,100 feet of segmented ditches arranged in two concentric circles. According to archaeologists at Wessex Archaeology, the remains date...