# Avebury

32 33 Few stone circles are circular but Avebury is most unusual in that it has two sharp corners Why The two tightest corners line up with the two centres of the inner circles to form two corridors. The narrow corridor points exactly to the top of Silbury Hill. From the summit of Silbury Hill midsummer sunrise and sunset divide the horizon into two sevenths of a circle. The extreme winter points do the same, leaving a total solar horizon zone of three sevenths of a circle. If the inner radius of Aveburys inner circles is three, then the distance between their centres is seven. Three to seven. Avebury lies exactly threesevenths of the way between the pole and the equator, the precise parallel passing a few feet south of the Cove. Like many examples of prehistoric surveying, one wonders how they did it. A rectangle three wide and seven high incidentally gives a diagonal which is an excellent value for the tilt of the earth, currently 23.4o. The angle between the wide corridor and the line connecting the two circles is again a seventh of a circle, 51o 25 42, the exact latitude of the very centre of Avebury. Seven was an important number to our ancestors as they knew seven heavenly bodies and knew of seven metals. Aveburys Corners hidden angles passages The mysterious corridors defined by Aveburys corners and circles. One points to Silbury Hill, the other recreates the 51.4 o angle.