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The Mount Shasta Wilderness is a federally designated wilderness area located east of Mount Shasta City in northern California. The US Congress passed the 1984 California Wilderness Act that set aside the Mount Shasta Wilderness. The US Forest Service is the managing agency as the wilderness is within the Shasta-Trinity National Forest. The area is named for and is dominated by the Mount Shasta volcano which reaches a traditionally quoted height of above sea level, but official sources give values ranging from from one USGS project,〔(United States Geological Survey (USGS) Geographical Names Information System(GNIS) )〕 to via the NOAA.〔(【引用サイトリンク】title=Datasheet for benchmark MX1016 ) This seems to be the latest and most accurate measurement from the U.S. Geodetic Survey.〕 Mount Shasta is one of only two peaks in the state over outside the Sierra Nevada Mountain Range. The other summit is White Mountain Peak in the Great Basin of east-central California.〔Atkinson, Ron p.224〕 The Wintun Glacier is located on Mount Shasta and is the lowest-elevation glacier in the state, lying at elevation and extending to the summit.〔Atkinson, Ron p.227〕 The smaller volcanic cone of Shastina (12,270 ft)〔(USGS-GNIS )〕 lies one mile (1.6 km) west of Mount Shasta and was formed after the ice-age glaciers melted. The wilderness protects both pristine forests and areas that were intensively logged and roaded in the past. Although less than half of the mountain remains roadless, Mount Shasta Wilderness is still the premier destination for a variety of activities from mountaineering, day-hiking, and backpacking to cross-country skiing, snowshoeing and ski mountaineering. It is valued for the many scenic, geologic and recreational attributes including glaciers, lava flows, hot springs, waterfalls and forests of Shasta red fir, sugar pine and other conifers. ==Recreation== Being a high, solitary and very large mountain with a base diameter of ,〔Adkinson, Ron p.224〕 Mount Shasta can create its own weather patterns which hikers must be aware of. Also, falling rocks are a major danger above timberline. The best time of year for hiking Mount Shasta is June and July, when routes are still snow-covered. Although there is no designated trail to the summit, many cross-country routes ascend to the mountaintop and all require experience in traversing ice and snow. There are ten trailheads giving access to the wilderness and several short trails leading up the slopes of Mount Shasta with the so-called Shasta Summit Trail (or Avalanche Gulch) being the most popular. This trail, although the "easiest" of the routes, still requires the use of ice axe and crampons. There are four major glaciers and three smaller glaciers radiating from the summit in addition to lava flows on the northern flank composed of andesite and basalt. A parking permit is required as well as a free wilderness permit and, if attempting a hike above , a Summit Pass for each climber must be purchased.〔(Shasta-Trinity National Forest Wilderness page. )〕 Human waste must be packed out, and all principles of Leave No Trace etiquette employed. Some restrictions include no dogs in the wilderness, a limit of 10 people in a group and no wood campfires.〔(Shasta-Trinity National Forest regulation document. )〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Mount Shasta Wilderness」の詳細全文を読む スポンサード リンク
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