The discovery of a previously unknown henge monument has been found close to Stonehenge.
Using the latest geophysical imaging techniques, which "see" below the ground without archaeology excavation, it is possible to make out a dark circle of interrupted ditch. There are two wider gaps opposite each other - these were entrances to the monument and are aligned on the midwinter sunset and midsummer sunrise - like Stonehenge itself. Inside the ditch it is also possible to discern the slight shadows of 24 postholes encircling the the central area, 25 metres in diameter. Near the centre are more dark areas indicating pits, and a large shadow suggesting that a mound was constructed there, perhaps in a later phase of the monument's use. The henge probably dates to around 2500-3000BC, contemporary with Stonehenge.
Source from : http://www.archaeology.ws/stonehenge.html
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