BBCNEWS The Travel Show November 6, 2021 10:43:00
But for over 30 years, there has been an unsolved mystery over the cathedral's most famous windows, the ancestors of christ. we thought that the earliest of those dated to about 1176, but in the 1980s, a wonderful art historian, called madeline caviness, suspected these figures were much older. she thought, at the time, that nobody would ever be able to prove it. she was just going from a stylistic analysis. a team from university college london have been analysing some of the ancestor series. we use a non—invasive technique that sends a beam onto the surface of the glass.