Archaeologists continue to make new discoveries that shed light on the construction and use of Stonehenge. The latest discoveries are "evidence of two huge pits positioned on celestial alignment" marking the rising and setting of the sun.
From the Art Daily article:
The international archaeological survey team, led by the University of Birmingham’s IBM Visual and Spatial Technology Centre (VISTA), with the Ludwig Boltzmann Institute for Archaeological Prospection and Virtual Archaeology in Vienna (LBI ArchPro) have also discovered a previously unknown gap in the middle of the northern side of the Cursus, which may have provided the main entrance and exit point for processions that took place within the pathway. Stretching from west to east, the Cursus is an immense linear enclosure, 100 metres wide and two and a half kilometres across, north of Stonehenge.