A remarkable natural event has captured the attention of locals and visitors alike in the Konnerud Mines (Konnerudgruvene) near Drammen. More than 100 icicles are growing straight up from the ground, rather than hanging from the ceiling. The tallest currently measures 62 centimeters, and experts say these peculiar ice formations continue to increase in size daily.
Rare phenomenon in Konnerud Mines
At 242 meters above sea level, this former mining site provides ideal conditions for the rare “upward-growing icicle” phenomenon. Water drips from cracks in the mine ceiling; once each droplet reaches the cold ground, it freezes and gradually forms a small spire of ice. Over time, additional droplets land, solidify, and make these icicles grow higher—much like the way stalagmites form in limestone caves.
Meteorologist explains the growth
State Meteorologist (statsmeteorolog) Magnus Ovhed highlights the delicate balance required for this effect:
“You need something for the water to drip from and conditions cold enough for the droplets to freeze on contact,” he says.
Since the entrance to the mine receives no direct sunlight, the sub-zero environment remains stable, allowing the icicles to keep expanding. Ovhed notes that this configuration of dripping groundwater, very cold air, and the absence of direct sun is relatively uncommon.
Similar sightings in Denmark
Upward-growing ice formations—sometimes referred to as icespikes—have appeared in several countries, including Denmark, though they are usually smaller and less numerous. In those instances, the phenomenon often occurs when liquid water underneath a partially frozen surface expands and forces new ice up through tiny openings. By contrast, the Konnerud Mines boast more than 100 icicles all in one place, an unusual concentration that has attracted considerable attention.
A hidden natural art gallery
Though reminiscent of a modern art installation, this spectacle is entirely natural. Visitors describe the icicles as mystical shapes rising from the mine floor, while scientists compare them to icy stalagmites. Locals hope this rare display will persist through the colder months, offering a glimpse into the surprising beauty nature can create—even in the depths of an old mining tunnel.
