Drive out of Reykjavik in any direction and within twenty minutes the road is running through lava. Not tidy volcanic soil but raw hardened flow, black and buckled, upholstered in grey-green moss, littered with boulders the size of vans that stopped exactly where they stopped. It is a landscape that looks furnished. Icelanders have long said that it is, and that the residents are the huldufolk, the hidden people.
Two words that refuse to settle
Icelandic has two terms in play. Alfar is the older, cognate with the English "elf" and shared across the Germanic languages. Huldufolk, from a root meaning concealment, is the everyday word for the neighbours you cannot see. Whether they name the same beings has never been agreed. Some folklore collectors were told firmly that elves are one thing and hidden people quite another; others recorded the words used interchangeably by the same informant in the same afternoon. The category has stayed usefully blurred for a thousand years.
What the hidden people are not is small, winged or twinkly. In the Icelandic material they amount to a parallel society: human in size and appearance, living inside rocks and hillsides in farms and churches that mirror the visible ones, keeping sheep and cattle, rather better dressed than their neighbours, and touchy about property. They marry, they hold services, they fall ill, they occasionally need a human midwife. The stories are less about enchantment than about etiquette between adjacent households, one of which happens to live in a boulder.
What the medieval sources actually say
The written record starts early and says surprisingly little. In the Poetic Edda the alfar appear mostly in a formula, paired with the Aesir in lines that sweep across every class of powerful being, as if to say gods and elves and everyone else. They are grouped with the divine rather than the trivial, and nothing suggests they are minor.
Snorri Sturluson's Prose Edda, compiled around 1220, is where the tidy scheme appears: light elves, said to dwell in Alfheim and to be fairer than the sun, and dark elves, blacker than pitch, who live underground. It is a satisfying division, and modern scholars are wary of it. Snorri was a Christian writing a handbook for poets several centuries after the conversion, and he had a taste for system. His dark elves look suspiciously like dwarfs under another label, and the bright-and-dark pairing may owe as much to Christian angelology as to anything a pagan farmer believed. The same text records that Alfheim was given to the god Freyr as a teething gift, which is the sort of detail nobody invents.
Britain, Ireland and the shrinking of the fairies
The comparison with the neighbouring islands is instructive, because the same basic idea went somewhere different. In Ireland the aos si, the people of the mounds, were understood as earlier inhabitants of the land driven underground, and their dwellings remain visible in the landscape as ringforts and raths. In Scotland and northern England the seelie and unseelie courts divided fairy society into the benign and the malicious. Running through all of it is the same nervous protocol: do not name them directly, do not accept their food, do not dig up their ground.
Then, in England, they shrank. Shakespeare's Mab, arriving in a hazelnut coach, is already miniature; the Victorians finished the job, adding butterfly wings, flower hats and the nursery. By 1900 an English fairy was something you painted for children. Ireland and Iceland largely resisted that reduction, and the difference shows in how the traditions behave today. A shrunken fairy cannot inconvenience a road scheme. A hidden person, human-sized and holding title to a rock, certainly can.
The rocks that would not move
Which brings us to the stories the foreign press adores. They are real, though usually less magical than the headlines imply. In Reykjavik there is a fifty-tonne boulder called Grasteinn, the Grey Stone, long said to be inhabited. Roadworks in 1970 and 1971 attempted to shift it; the machinery kept failing, and a bulldozer severed a water conduit feeding a nearby fish farm, killing tens of thousands of young trout. The rock was finally relocated in 1999, carefully, with local blessing, a short distance to one side.
The best known case is the Galgahraun lava field near Alftanes, where a road scheme was fought through the courts from 2013. NPR reported that campaigners had halted construction, and international coverage fastened on the claim that the lava contained an elf church. The fuller picture is more ordinary. The objectors were a conservation group, the legal argument turned on environmental and heritage law and the protection of an unusual lava formation, and the folklore was one thread among several. Iceland's road administration, worn down by enquiries, keeps a standard reply on file for journalists asking about elves.
Ireland offers a near-perfect parallel. In 1999 the folklorist Eddie Lenihan campaigned to save a lone whitethorn at Latoon in County Clare, said to be a gathering place for the fairies of the region, from a new bypass. The Irish Times reported that the bush was spared and the route adjusted around it. It is still standing beside the motorway.
The statistic everyone gets wrong
Now the number you have probably seen. Headlines announce, at reliable intervals, that most Icelanders believe in elves, usually citing fifty-four per cent. That figure is a misreading of a real survey.
The folklorist Terry Gunnell ran a national belief study at the University of Iceland in 2006 and 2007, following earlier work by Erlendur Haraldsson in the 1970s. As PBS NewsHour set out, roughly eight per cent of respondents said elves definitely exist, while about fifty-four per cent declined to rule out their existence. Those are entirely different statements. Refusing to deny something is the position most people take on most unverifiable propositions, and it sits closer to good manners than to faith.
Ask Icelanders directly and you get a spread: a small number who are sincere, a larger number who would not build on a particular rock without a decent reason, a great many who treat the question as a national in-joke and answer accordingly, and a fair few who are frankly bored of tourists raising it. Gunnell's own framing, of belief as a set of shades rather than a switch, is the honest description, and it is the one that never fits a headline.
Then an Oxford philologist changed everything
One last twist. If the word "elf" summons a tall, grave, immortal archer with a longbow and a grievance, you are not thinking of Icelandic folklore at all. You are thinking of J. R. R. Tolkien.
Tolkien read the Eddas as a professional. Middle-earth takes its name from Old Norse midgardr, and an entire roll-call of dwarf names, Gandalf included, is lifted straight from a catalogue in the Poetic Edda. What he did with the elves was a deliberate act of restoration and reinvention. He detested the Victorian miniature and pushed them back to full stature, then made them older than humanity, artistically supreme, and permanently in mourning for a world that no longer belongs to them. That version passed into fantasy fiction, then role-playing games, then film and video games, until it displaced almost everything else.
Which leaves a pleasing irony for anyone standing at the edge of a lava field. The elves of the global imagination were largely designed by a professor in Oxford. The ones with an address, a claim on the ground and an occasional say in road planning are still out there in the moss, and they were never the ones with the bows.
