Samhain is believed to have Celtic pagan origins, and some Neolithic passage tombs in Great Britain and Ireland are aligned with the sunrise at the time of Samhain. As a festival for communing with the ancestors, however, it may predate the Celtic era. A number of stone circles and dolmens, including for example, Avebury, exhibit a west-south-west alignment, the azimuth angle of the setting sun on 31st October.
samhain is believed to have celtic pagan origins and some neolithic passage tombs in great britain and ireland are aligned with the sunrise at the time of samhain as a festival for communing with the ancestors however it may predate the celtic era a number of stone circles and dolmens including for example avebury exhibit a west-south-west alignment the azimuth angle of the setting sun on 31st october