Hidden truth in old legends

There was one catch, though - the door to Annwn. Those living could enter Annwn if they could find this door. Welsh legends mention that the door was somewhere near either Lundy Island of Glastonbury Tor. On a certain day of the year, this door would open, and the inhabitants would welcome humans in for feasting and celebration. There was one condition - living should not take nothing with them to the human realm. This went on until one human visitor kept a flower in his pocket. From that day on, the door has remained closed. There is always some kind of hidden truth in these old legends, but one has to get to the bottom of it. Not so long ago, archeologists discovered an ancient temple near Lydney that seems to be important in Druid esoteric spiritual readings.

A couple of centuries later we hear about the land of Avalon, which gives shelter to king Arthur. Well, this is actually land of Annwn, that we were talking about. As the years went by, Celtic legends transformed it and Annwn became identified with Avalon.