“They say also that the moon, as viewed from this island (alluded to have been Scotland or Britain), appears to be but a little distance from the earth and to have on it prominences, like those of the earth, which are visible to the eye. The account is also given that the god (Apollo equivalent) visits the island every nineteen years, the period in which the return of the stars to the same place in the heavens is accomplished.” (Coincides with Metonic Cycle)
Diodorus Siculus, Library of History
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