U-Valley, Going-to-the-Sun Road, Glacier National Park, Montana
Going-to-the-Sun Road is the only road that crosses Glacier National Park in Montana, USA, going over the Continental Divide at Logan Pass. It was completed in 1932. The road, a National Historic Landmark and a Historic Civil Engineering Landmark, spans 53 miles (85 km) across the width of the park.
The road is one of the most difficult roads in North America to snowplow in the spring. Up to 80 feet (24 m) of snow can lie on top of Logan Pass, and more just east of the pass where the deepest snowfield has long been referred to as Big Drift. The road takes about ten weeks to plow, even with equipment that can move 4000 tons of snow in an hour. The snowplow crew can clear as little as 500 feet (150 m) of the road per day. On the east side of the continental divide, there are few guardrails due to heavy snows and the resultant late winter avalanches that have repeatedly destroyed every protective barrier ever constructed. The road is generally open from early June to mid October, with its latest-ever opening on July 13, 2011.
The two lane Going-to-the-Sun Road is quite narrow and winding, especially west of Logan Pass. Consequently, vehicle lengths over the highest portions of the roadway are limited to 21 feet (6.4 m) and that means no recreational vehicles or trailers in excess of this length restriction are permitted beyond two larger parking areas, each located at lower points dozens of miles below Logan Pass, on both the west and east sides of the parkway.
Prior to the construction of the road, it would take the earliest visitors 3–4 days to see the park.
The road is named for Going-to-the-Sun Mountain, which dominates the eastbound view beyond Logan Pass. One mythological story tells of the deity Sour Spirit, who returned to the sun after teaching the Blackfeet to hunt, leaving his image on the mountain.
en.wikipedia.org/wiki/Going-to-the-Sun_Road
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