In medieval Ireland, Samhain became the principal festival, celebrated with a great assembly at the royal court in Tara, lasting for three days.
After being ritually started on the Hill of Tlachtga, a bonfire was set alight on the Hill of Tara, which served as a beacon, signaling to people gathered atop hills all across Ireland to light their ritual bonfires.
"end") is a festival on the end of the harvest season in Gaelic and Brythonic cultures, with aspects of a festival of the dead.
Samhain was the traditional time for slaughter, for preparing stores of meat and grain to last through the coming winter.
The term derives from the name of a month in the ancient Celtic calendar, in particular the first three nights of this month, with the festival marking the end of the summer season and the end of the harvest.