Scientists havent solved these mysterious sounds…yet!

However, many other noisy enigmas are still out there, unresolved.

It mimicked the rhythm and migration patterns of a blue or fin whale.

lonely whale

The mystery deepened when, in 2010, similar sounds were picked up again.

Was it the same creature, or did it indicate that Watkins one-of-a-kind find might have company?

The question still puzzles scientists today.

Colossi of Memnon

The Buzzer

Numbers stationsthose shortwave radio stations that transmit monotone, coded messagesare inherently eerie.

But the one known as UVB-76, also dubbed the Buzzer, really takes the cake.

Broadcasting a startling tone continuously from Russia since 1982, its a standout in the creepy department.

The most captivating theory?

The Hum

A noise doesnt have to be sharp to be startling.

Interestingly, not everyone can hear it.

This raises the question: are people imagining this sound after hearing others talk about it?

If the hum is real, whats causing it?

Yet, theres no concrete proof linking the two.

This annoying noise kept the locals up at night for about a month before it suddenly stopped.

During that time, everyone had a theoryfrom alien invasions to faulty lightbulbs.

Interestingly, one of these giant statues wasnt always silentit reportedly sang at dawn.

The serenades ceased around the time the Roman Emperor Septimus Severus had the statues repaired in 200 A.D.