At the end of August, attention was drawn to a bunker party in Oslo where 25 people were carbon monoxide poisoned.
Now SVT can tell about a rock room in connection with the metro system in Solna where people have broken in on several occasions to arrange rave parties - most recently two weeks ago.
Intended for rescue vehicles
It is a long, underground tunnel that is intended for rescue vehicles in the event of an accident in the subway.
- There are absolutely no environments that are suitable to stay in and it is purely life-threatening for those who are there.
It can also have enormous consequences in that they block an escape route, says Fredrik Cavalli-Björkman, traffic director at the Stockholm Region.
The police broke up the party
From the metro track there are emergency exits that must be left open due to safety reasons.
It has been utilized by going down on the track and then from inside opened up the rock door which is several hundred meters away from the metro station.
From there, according to information to SVT, about 150 people streamed down into the tunnel to join the party in the rock room.
Exclusive DJ equipment and lots of alcohol were found by the police who came down to solve the rift.
The police confirm that a report was made at the time regarding the illegal intrusion.
See more in the video above.