Glastonbury Tor is a mythical hill near Glastonbury in the English county of Somerset.
The Celts called it Ynys Witrin, or the Isle of Glass, and believed it was a gateway to the underworld. Later legend had it that the Tor was the Island of Avalon, burial site of King Arthur.
The Tor is topped by the Tower of St Michael’s– the remains of a fourteenth century chapel dedicated to Saint Michael- a replacement for an earlier church destroyed by an earthquake in 1275.
The whole site is managed by the National Trust, and has been designated a scheduled monument– a “nationally important” archaeological site.