A possible role of Alpha Crucis in the astronomical landscape of Silbury   Hill
  The paper is proposing a possible link between the construction of the Silbury Hill, the prehistoric artificial mound near Avebury, and the observation of Alpha Crucis, the main star of the Crux constellation, which was slowly disappearing from the local sky due to the precession of the Earth's axis. For the discussion, we used simulations of the local astronomical landscape made by means of Stellarium software. 
Amelia Carolina Sparavigna
physics.hist-ph