NATIONAL PARKS -- Crews plowing Glacier National Park’s historic Going-to-the-Sun Road say heavy snowpack this winter has put them almost a month behind schedule.

Stan Stahr says he hasn’t seen the snowpack this bad in the 20 years he has worked for the park, and it is making it dangerous for crews that are experiencing avalanches, mud slides and rocks breaking off cliffs.

With another round of cool, wet weather in the forecast, Stahr says park officials can’t say for sure when the road will be completely open over Logan Pass. It generally opens between now and the beginning of July.