Next to Arlanda there is an old backup transformer station. It is a pretty huge underground complex with multiple levels. Even though it is abandoned it is still located in a really active spot. It’s right in front of some facility and when I was walking past there was a car from security there (most likely a coincidence). I doubt anyone would care about but don’t be stupid.
The air looked kinda “asbestos-rich” so I won’t be going there without a mask again. According to my 4-gas meter the air quality is good, other than the dust.
high voltage
