Mount Etna erupted today.
Italian amateur schumann monitoring shows at time of eruption a sudden 'silence' in the electric field.
>While Guinness World Records officially lists the Djoser Step pyramid in Egypt as the world’s oldest pyramid (around 2,630 BC)
More like 10.000 BC.
Oops, mistake. Djoser pyramid, the fake one build by humans.
Great Pyramid is more like 10.000 BC.
VLF in audible form.
Listen to schumann wave forms live.
Multiple channels around the world.
http://abelian.org/vlf/
This is particular interesting for people who hear sometimes a buzz in their ears (like me).
When tuning volume up, those low buzz sounds resemble what I hear from time to time.
no tinitus is high pitch which I had aswell from loud sounding parties, but it healed. I hear low pitch buzzing for decades.