Once recording technology was developed, people started recording mysterious noises… here are a couple.
This sound was recorded in the deep Pacific in 1997. It’s source has not been identified. It is here, sped up 16x.
Some folks frivolously claim that it is H. P. Lovecraft’s Cthuhlu, but it is more likely caused by a large animal. According to some references, geological causes have been ruled out.
The Slow Down
This sound was recorded May 19, 1997, also in the Pacific. It has been hypothesized that it originates from friction of Antarctic ice against land. It has also been significantly sped up…