Glastonbury TorA portion of the game takes place in Glastonbury Tor. British legends indeed connect the Tor with Avalon, King Arthur and the Grail. Joseph of Arimathea allegedly traveled to Britain and left the Grail in Glastonbury where an Abbey was later built
In the game, there is a little tree, and if the player examines it, narration will tell them that this thorn tree was planted by Joseph of Arimathea. That tree known as 'Glastonbury Holy Thorn' actually existed in the Abbey, and died in 1991 according to Wikipedia
Also, the cover lid of the well seen in the very same screen, is curiously similar to the lid of the Chalice Well, an actual natural spring that exists in the area
ManualIn some portions, Merlin (the narrator) will refer to the Liber ex Doctrina, the copy protection manual of the game. If the player types 'Ask Merlin about Liber ex Doctrina', the cover of the manual will appear in a dialog window and Merlin suspiciously will warn the player that he must always have it in hand. The manual's name Liber ex Doctrina means 'Free/Book from doctrine' in Latin. Note that in Latin, liber means both free and book.
Red herringsThere are a couple of red-herring places the player can find, without any significance to the game:
RunesIf the player examines the pedestal where the hag was standing on, in the stone circle, a dialog window will open with an icon of a runic inscription and its 'translation'. According to the narrator, the runes say about the five stone poets, encountered later in the game.
However if anyone tries to translate the runes with English letters (such guides can be found anywhere online), the 'actual' inscription doesn't say anything like that. The inscription actually contains the word 'Stormbringer' followed by the phrases 'death is all' and 'beware cursed is the wielder Thor'.
Other runes and words are too difficult to make out
Information also contributed by Itay Shahar
Contributed by Boston Low (92) on Jun 02, 2005. [revised by : Patrick Bregger (98683)]. -- edit trivia