Trondheim鈥檚 Nidaros Cathedral is full of secrets, messages from the past written in stone. One researcher is now decoding these missives, half hidden in a very special spot in and around the most sacred place in the church.
Nobelmen and women, in fancy clothing and pearls 鈥 but with dragon wings and tails. A laughing man with a full head of curly hair. Lions biting the ears off a man whose mouth is full of writhing serpents.
This article was written by Nancy Bazilchuk and first published on . It has been republished here with kind permission.

These may sound like a weird combination of a gothic novel and a nightmare, but it鈥檚 something completely different 鈥 a description of some of the eerie and surprising sculptures in Nidaros Cathedral, the northernmost gothic cathedral in the world.
But what were the messages that stonemasons and religious leaders were trying to send visitors to the cathedral 鈥 and how do we interpret these messages hundreds of years later?
The Cult of St. Olav
Nidaros Cathedral鈥檚 long history is part of the reason it has been an attraction for both pilgrims and now, researchers.
The first stones for the cathedral were laid in the late 1100, when a church was built over the shrine of聽Saint Olav, the Norwegian Viking king who is generally credited with bringing Christianity to the country.
Olav was killed in the Battle of Stiklestad in 1030 and canonized a year later, in 1031.
鈥淭he high altar still today stands on the place, pointed out as where St. Olav was buried after he was killed in the battle of Stiklestad on the 29th of July 1030,鈥 said 脴ystein Ekroll, chief archaeologist and researcher at the Nidaros Cathedral Restoration聽 Workshop, on the latest episode of.
The high altar is surrounded by the Octagon, an eight-sided structure that is quite unusual as gothic cathedrals go, Ekroll said.

鈥淵ou can find parallels, especially in English cathedrals, and you can connect them, but the Octagon has no parallel. Not in Northern Europe, at least not north of the Alps. So there is something special about this. Why build an octagon? Why not a square or a circle? We have round churches, we have square churches, we have cruciform churches and so on. Why an octagon?鈥 he said.
Ekroll thinks the Octagon was built 鈥 and subsequently re-constructed stone by numbered stone in the 1500s 鈥 as recognition that it was a martyrium, a place where St. Olav鈥檚 holy remains had been buried.
Pilgrims would come to the cathedral because of Olav, so the sculptures in and around the Octagon, where visitors would walk to be near the shrine, took on extra special significance.
It was a place where the most important messages would reach the greatest number of people 鈥 in theory, at least.
Dramatic Events Help Date Sculptures
But that鈥檚 not the only reason this special subset of sculptures is so interesting.

Margrete Syrstad And氓s is an art historian and associate professor at NTNU鈥檚 Department of Art and Media Studies who is at work on a book about cathedral鈥檚 sculptures.
Unlike many other parts of the cathedral, she says, two dramatic events enable researchers to actually date the sculptures. So what happened?
鈥淚n 1328 disaster strikes,鈥 And氓s said on the podcast. 鈥淚t鈥檚 a huge fire and it takes everything of wood inside, probably the shrine is damaged, bells are damaged. Letters are preserved where the bishop writes to other bishops to encourage them to send money because they need to redo his cathedral. And that鈥檚 when the restoration of the Octagon takes place. So it is originally 12th century, but then they start restoring in 1328.鈥
The importance of the cathedral, at the known limits of the Catholic world, was such that the Pope himself promised 100 days of indulgences to anyone who would contribute to the reconstruction.
The stone masons must have begun almost immediately to carve the intricate and weird sculptures around the Octagon. Because not long afterwards, in 1349鈥
The Black Death
鈥淒isaster really, really strikes because then the Black Death comes and 70% die in Trondheim. And we have a very defined period of time from 1328 when we know exactly when the sculptures here are done,鈥 And氓s said.
Read more: The Story of the Black Death in Norway
That makes the carvings a kind of snapshot in time, underscoring what religious leaders might think were the most important things people needed to know to save their souls, for example.

In this case, the person behind the messages was聽 At the time, And氓s said, Nidaros Cathedral was seen as a remote but important outpost of the Catholic Church 鈥 so remote they called it Ultima Thule, meaning the farthest known reaches of the modern world.
鈥淚n the Catholic church, in the medieval times, Ultima Thule is this place,鈥 she said.
鈥淚t鈥檚 the frontier against the north, against everything that is unknown and terrifying, and also not Christian. They talk about that themselves in Norse sermons, that鈥檚 where evil comes from, and it鈥檚 against the Samis, it鈥檚 against the unknown, those who are not Christianized. So they see themselves as a frontier as well, as part of the Catholic church.鈥
Souls of the Faithful
And氓s said it鈥檚 hard to overestimate the importance of religion in medieval Europe.
鈥淚 don鈥檛 think we can quite imagine what that kind of a life was like, and how much more today, you don鈥檛 necessarily feel that you鈥檙e standing on the edge of death at all points in time. But I think within a society like that, you will be much more aware that you never know how much time you have,鈥 And氓s said.
鈥淎nd I think that鈥檚 sort of a backdrop, when you look at the sculptures, reminding you about all the sins that you need to keep in mind right now, you can鈥檛 wait until tomorrow.鈥
So one thing these strange half-human, half mythical creatures do is to warn pilgrims and the clergy how not to behave. To our 21st century eyes, these sculptures are puzzling 鈥 what message can they possibly send?
But And氓s says the imagery, of a hybrid creature, was well known in medieval times. And part of the message they were sending was about sex.
鈥淎rchbishop Eiliv, the guy who started the restoration works, has regulations for the lay people on how to behave. And the sin of sexuality is of course, a recurring theme,鈥 she said.
鈥淥f course they鈥檙e humorous and they鈥檙e playful, so they鈥檙e funny in a sense. But they鈥檙e also a sense that we are in a decayed moral state. You鈥檙e not this and you鈥檙e not that, which it ain鈥檛 good. And having a tail can never be good in medieval Christianity. It refers to everything that is bad, essentially, the devil鈥檚 work,鈥 And氓s said.
To learn more聽about the sculptures and what they tell us about about life in the Middle Ages, listen to the .
This article was written by Nancy Bazilchuk and first published on . It has been republished here with kind permission.
