The Astronomical Significance of the Large Carnac Menhirs

  title={The Astronomical Significance of the Large Carnac Menhirs},
  author={Archibald Stevenson Thom and Alexander Strang Thom},
  journal={Journal for the History of Astronomy},
  pages={147 - 160}
  • A. Thom, A. Thom
  • Published 1 October 1971
  • Physics
  • Journal for the History of Astronomy
We find in Britain many indications that in Megalithic times the Sun, Moon and stars were carefully observed at rising or setting. Probably no great accuracy was needed for stellar observations where the object was to identify the star so that the time of night could be estimated. But when we examine the solar and lunar sites we find that at many places the arrangements are such that declination differences of a minute of arc or less could have been detected. The method of observing was to make… 

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But see ibid
    Megalithic lunar observatories, chap
      Megalithic sites in Britain (Oxford
      • 1967
      In both cases it will be necessary to run a difficult traverse through the woods to the menhi r at Le Manio before any importance can be attached to these declinations