<P> In 1982, President Ronald Reagan and the U.S. Congress established the Mount St. Helens National Volcanic Monument, a 110,000 acres (45,000 ha) area around the mountain and within the Gifford Pinchot National Forest . </P> <P> Following the 1980 eruption, the area was left to gradually return to its natural state . In 1987, the U.S. Forest Service reopened the mountain to climbing . It remained open until 2004 when renewed activity caused the closure of the area around the mountain (see Geological history section above for more details). </P> <P> Most notable was the closure of the Monitor Ridge trail, which previously let up to 100 permitted hikers per day climb to the summit . On July 21, 2006, the mountain was again opened to climbers . In February 2010, a climber died after falling from the rim into the crater . </P> <P> The mountain is now circled by the Loowit Trail at elevations of 4000--4900 feet (1,200 - 1,500 m). The northern segment of the trail from the South Fork Toutle River on the west to Windy Pass on the east is a restricted zone where camping, biking, pets, fires, and off - trail excursions are all prohibited . </P>

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