This has been going on for more than a month according to some inhabitants, but every night with more and more intensity. It can be only heard at night ( around 1AM – 6 AM) and authorities cannot explain it yet.
Article here: https://en.protothema.gr/thessaloniki-strange-sound-disturbs-the-suburbs-every-night-audio/
You can hear the recorded sound for yourself here: https://youtu.be/AApmAWzvx0k
5 comments
its a blowback situation of either natural gas piping or water pumps
they just dont know from where its coming
Drums of Moria.
Like some horror movie
Kronos banging on the door.
Ghost of kemal lol