Called Ear Rumblers Assemble on Reddit ... Pay attention when you're having a really big, tired yawn. There's this rumbling sound you feel coming from the base of your throat, almost like thunder.

Among the elephants, the most common greeting was a low rumbling noise accompanied by ear flapping. Females used this ...

But for some residents, their lives are being made a misery by a mysterious rumbling ... such as ear plugs and headphones. On a night when the streets and houses are silent, the noise is amplified.

Most people don’t know they can contract their middle ear muscle, technically called the tensor tympani, but will recognise it as a rumbling sound or muffling effect of your hearing when yawning ...