Ulysses, are you familiar with a book entitled Crown of the Continent: The Last Great Wilderness of the Rocky Mountains? There is a passage in that book where the author, Ralph Waldt, talks about a four-day, snowshoe backpacking trip that he made into a remote part of Glacier back in the mid-1970s. A powerful cold front moved in one night after his party set up camp at the head of a mountain lake.
"During the next eight hours, the temperature dropped from 34 degrees Fahrenheit to 35 degrees below zero. The lake where we were camped [froze] up for the year that night, more than three inches thick by dawn....The sounds I heard that night rival anything I have experienced to date. As the ice formed rapidly over more than 1500 acres of water surface, it created a phenomenal symphony that echoed through the starlit valley all night long. The ice groaned, squealed, popped, moaned, and more. It [created] deep, high-pitched, undulating sounds, powerful, vibrating expansion cracks. an extraordinary array of sound that can only be described as extraterrestrial. I stayed up most of the night in awe, listening."
The effect that these conditions exerts on timber in the Northern Plains and Rockies is precisely why the Lakota used to call December The Moon of Popping Trees. Water seeping into fissures in wood, as it quickly froze and expanded, would cause limbs to literally explode, like the crack of a rifle. Phenomena such as these constitute one of the greatest gifts that this powerful land we call Montana can bestow upon humanity: the ability to literally leave humanity awestruck by the power of Nature and almighty God. 'tis a very good thing for Man to be humbled in such a way periodically.