Blå Jungfrun

Lore & Background

Blå Jungfrun plays an important role in Swedish folklore, where it is viewed as an evil and magical place. The name Blå Jungfrun was originally used by sailors to avoid provoking the evil spirits who dwelt on the island. According to a widespread belief, related already by Olaus Magnus in 1555, witches meet there each Maundy Thursday. Carl Linnaeus, who visited the island in 1741, was sceptical, writing: 'Women and fairy-tales ... generally say that all witches will go here (truly a rather difficult journey) each Maundy Thursday; but those who have visited the place once are not likely to return, and should find out the reason for the fable: If any place in the world looks hideous, this is surely one of the most cruel.'

Reader's Guide

Blå Jungfrun's significance spans geology, archaeology, folklore, and conservation. Geologically, it is an ancient inselberg rising from the Sub-Cambrian peneplain, formed in the Precambrian and later buried in sandstone, which protected it from erosion until geologically recent times. In 2014, archaeologists discovered a cultural layer after probating the soil, and in 2017 they recovered quartz shards dating to the Stone Age, estimated around 8500 BC, likely from a hunter-gatherer settlement. The island's folklore, particularly the belief that witches gather there on Maundy Thursday, has influenced modern Easter traditions in Sweden and Swedish-speaking parts of Finland, where children dress as witches and go door-to-door for treats. The island's red granite was quarried between 1904 and 1925, leading to conservation efforts; a donation from Torsten Kreuger enabled its acquisition, and it became a national park in 1926. Today, visitors can tour the island by boat from Oskarshamn or Byxelkrok, but overnight stays and fires are prohibited, and removal of stones from the ancient labyrinth is forbidden.

Did You Know?

• The island is home to black guillemots and has been a Swedish National Park since 1926.
• An ancient stone labyrinth on the island is protected; it is forbidden to remove stones from it.
• Archaeologists recovered quartz shards from the island in 2017, estimated to date to around 8500 BC.
• In Swedish folklore, witches were believed to meet on Blå Jungfrun each Maundy Thursday.

Geological Origins and a Ten-Thousand-Year-Old Secret

Blå Jungfrun is far more than a small, uninhabited island tucked into the Kalmar Strait between Småland and Öland. Geologically, it is an ancient inselberg that emerged from the Sub-Cambrian peneplain. The rock was shaped during the Precambrian and then entombed beneath thick sandstone deposits. That sandstone blanket served as a natural shield, preventing the island from being worn down by erosion. Only in geologically recent times was the cover removed, leaving behind the bare rock and dense hardwood forest that define the landscape today. The island's human history was unexpectedly illuminated in 2014. A research team probing the soil identified a cultural layer, though authorities limited their work to a small zone and forbade sample collection. Three years later, the team recovered quartz shards dating to the Stone Age, likely fashioned by a hunter-gatherer settlement. The site is estimated to be roughly ten thousand years old, around 8500 BC, though its exact age remains uncertain.

The Witches' Island: Folklore and Skepticism

Long before modern tourism, Blå Jungfrun occupied a fearsome place in the Swedish imagination. In folklore the island is regarded as a sinister, enchanted spot, and its very name is said to have been chosen by sailors as a respectful way to refer to it without angering the evil spirits believed to inhabit the rock. A belief already recorded by Olaus Magnus in 1555 held that witches gathered on the island every Maundy Thursday. The naturalist Carl Linnaeus, who made the crossing in 1741, was openly dismissive of the legend. He acknowledged that women and storytellers claimed all witches journeyed there each Maundy Thursday, but he noted that anyone who had actually visited would be unlikely to return and would understand why the fable existed. His verdict on the landscape was blunt: if any place in the world looked hideous, this was surely among the most cruel. The island's bare rock, caves, and ancient stone labyrinth—where removing stones is strictly forbidden—may well have reinforced the sense of otherworldliness that inspired such tales.

Easter Witches and Living Tradition

The Blåkulla legend did not remain confined to old manuscripts and sailors' superstitions. In Sweden and in the Swedish-speaking regions of Finland, the story has been woven into a living Easter custom that children still practise today. On Easter, young children dress up as witches, old women, and old men, echoing the mythical gathering of witches on the island. They then go from door to door collecting treats in a manner closely resembling the trick-or-treating associated with Halloween in other parts of the world. In some traditions the name Blåkulla is treated as synonymous with Blå Jungfrun, tying the festive costume parade directly to the island's reputation as a witches' meeting place. The children sometimes also present hand-made cards and other small greetings to the households they visit, adding a personal, community-oriented touch to what is essentially a commemoration of an ancient folk belief. The tradition keeps the island's dark, magical identity alive in the everyday lives of Swedish and Finnish families, long after the era of genuine witchcraft accusations has passed.

From Quarry to National Park

For much of the early twentieth century, Blå Jungfrun was a working quarry rather than a protected wilderness. Between 1904 and 1925, red granite was extracted from three quarries on the island's southern side and shipped primarily to Germany, where it was used as decorative stone. The environmental damage caused by this extraction sparked a campaign to save the island. A generous donation from Swedish entrepreneur Torsten Kreuger provided the funds needed to purchase the island and halt the quarrying operations. On 5 February 1926, the Swedish government formally established Blå Jungfrun as a national park. Today the island, which spans roughly 0.7 square kilometres and rises to a mean height of 86 metres, is home to black guillemots and a mix of bare rock and dense hardwood forest. Visitors arrive by tour boat from Oskarshamn or Byxelkrok, a service that has run regularly since the 1950s. A park guide is stationed on the island to explain regulations, which include a ban on overnight stays and open fires. A typical visit lasts about three and a half hours.