Everyone fell silent by Kairos' request.
And at first, there was only silence.
But then, there were these strange, but familiar, bristling sounds. After a few moments, it became quite easy to make out numerous of these sounds coming from almost everywhere around them.
They were quite hard to distinguish, as they didn't exactly sound like anything recognizable. It made the actual meaning of the sound a little confusing.
Then out of nowhere, there was an abrupt slam that came from above them before a loud screech. It seemed that whatever was above them, knew that they were down there.
Countless more slamming noises resounded as more aggressive screeching rang out.
The ground had begun shaking, and that could be clearly felt by everyone involved. Everyone had fallen silent due to fear, but this prompted Kairos to frown as he felt that it was too late.
This process had continued for over ten minutes, just relentless banging and screaming. However... it eventually died down.
...Moles.