^^^^ Yep....that's exactly what I think of every time I'm driving along somewhere in the mountains where there's a rock face going off above me and it starts raining like that.
One time, on our way back to Ouray at night from a day trip to Durango, it started raining down in Durango, but we didn't even think about it....by the time we got to Hermosa, it turned to snow.....by the time we went by Coal Bank Pass, it was a white-out.....could only see a few meters in front of us, unless there was oncoming traffic.....like that all the way over Molas, through Silverton, over Red, and down into Ouray....as we rounded one of the last corners (very near this rockslide), there were big rocks on top of the snow-covered highway surface. :worried: