[MtnClimber]

I was on a climbing expedition on Cho Oyu from the Tibet side during the post monsoon season. The avalanches were frequent and thunderous, but often I could not even see where they were. I also observed the same in the Alps. Not so much avalanches, but more rock fall in the Colorado Rockies. You hear it, but in the vastness, can’t see it.

[verum ago]

You hear it, but in the vastness, can’t see it.

Yup- when I used to live in the Idaho mountains, and now where I live in coastal Alaska, there's a couple seasons of 'thunder' in spring- an earlier one of avalanches, and a later one of rockfalls. Kinda cool. Back in central Idaho (Sawtooth Mountains country) I heard some monster avalanches from 20 miles away. If you got a good warm spell right after a heavy snow at the right time of year you could hear booming sounds every few minutes for a day or two. Was like the background sound effects for a WWII movie or something (artillery in the distance).