These are pictures of avalanche control work at Snoqualmie Pass. The Pass is currently closed down so crews could bring down a buildup of snow that could otherwise result into a slide onto the roadway.
Eastbound traffic is stopped at milepost 47 near Denny Creek and milepost 56 near Gold Creek. Westbound traffic is stopped at milepost 61 near Price Creek.
Due to the nature of this type of work a reopening time can't be estimated. We'll keep you updated. While you're waiting though, here's a very interesting entry from the Washington State Department of Transportation blog on how avalanche prevention work is done. I want to get paid to 'play' with explosives.