What is the scientific explanation for the rumble noise inside Devil's Cave system?

[OFG-1]

Trolls. Albino cave trolls. I used to see them all the time, but then I quit diving air at 200 feet.

[tflaris]

Trolls. Albino cave trolls. I used to see them all the time, but then I quit diving air at 200 feet.

That's believable!


"Never doubt that a small group of thoughtful, committed citizens can change the world; indeed that is the only thing that ever has."
- Margaret Mead, Anthropologist

[cavekrazi]

Doing the Intro to Cave Diver Course last year at Devil's Eye, I heard this rumble noise that I though were produced by other divers passing us using scooters. Later, the noise came back again and no divers around; then, I though the cave was collapsing at some point.

After having more than +500 minutes diving this system, I'm getting used to it; but, I would like to find a scientific explanation for the noise. The only information I have is that it is created by the water flowing and changing pressure.

Has anybody can provide some more information or a place (internet), book, etc where to learn more about it? Does each submerge cave have unique sounds? Can you hear the noise deep inside this cave, from where it is coming?

Thanks in advanced!

What did you have for lunch??? Hmmmmm???

[quickean]

Doing CCR deco, when OC divers are exitting it sounds like a freight train going by from bubbles rolling on the ceiling.

[Captain Bil]

my band practices in the white room.

...with black curtains, at the station?

[MichaelAngelo]

Trolls. Albino cave trolls. I used to see them all the time, but then I quit diving air at 200 feet.

Then the trolls moved to the internet

[jason]

It is the bubbles migrating along the ceiling.

[cmint]

I've heard it in Orange Grove too, I always assumed it was cars passing nearby overhead... possible?

[skoskinen]

The sound comes from gas bubbles moving through the hair cracks in the rock and expanding as they race towards the surface. The strength of the expanding gas is strong enough to make the rock produce the crack/rumble. Depending on the quality of the rock, sound can be very loud or not. Some caves in France are extremely loud and it sounds like train is passing over you all the time.

AFAIK. there is no correlation between cave stability and this rumbling sound.

[LiteHedded]

...with black curtains, at the station?

ha!