February 18, 2011
Jericho's tower had astronomical relevance
Interestingly it has been discovered now that the tower is aligned with the summer solstice in a way that, when the Sun sets that evening, the shadows of the nearby hill envelop first the tower and then the whole town.
Roy Liran and Ray Barkai, Casting a shadow on Neolithic Jericho. Antiquity, 2011. Freely accesible.