|
Mount Hood, called Wy'east by the Multnomah tribe, is a potentially active stratovolcano in the Cascade Volcanic Arc of northern Oregon. It was formed by a subduction zone on the Pacific coast and rests in the Pacific Northwest region of the United States. It is located about east-southeast of Portland, on the border between Clackamas and Hood River counties. In addition to being Oregon's highest mountain, it is one of the loftiest mountains in the nation based on its prominence. The height assigned to Mount Hood's snow-covered peak has varied over its history. Modern sources point to three different heights: , a 1991 adjustment of a 1986 measurement by the U.S. National Geodetic Survey (NGS), based on a 1993 scientific expedition,〔 and 〔 of slightly older origin. The peak is home to 12 named glaciers and snowfields. It is the highest point in Oregon and the fourth highest in the Cascade Range.〔 〕 Mount Hood is considered the Oregon volcano most likely to erupt,〔Most likely to erupt based on history; see 〕 though based on its history, an explosive eruption is unlikely. Still, the odds of an eruption in the next 30 years are estimated at between 3 and 7 percent, so the U.S. Geological Survey (USGS) characterizes it as "potentially active", but the mountain is informally considered dormant.〔 〕 == Establishments == Timberline Lodge is a National Historic Landmark located on the southern flank of Mount Hood just below Palmer Glacier, at approximately above sea level.〔 〕 The mountain has six ski areas: Timberline, Mount Hood Meadows, Ski Bowl, Cooper Spur, Snow Bunny, and Summit. They total over of skiable terrain; Timberline offers the only year-round lift-served skiing in North America.〔 〕 Mount Hood is within the Mount Hood National Forest, which comprises of land—including four designated wilderness areas that total —and more than of hiking trails.〔 (【引用サイトリンク】 About the Forest )〕〔(【引用サイトリンク】title=Trail Stewardship )〕 The most northwestern pass around the mountain is called Lolo Pass. Native Americans crossed the pass while traveling between the Willamette Valley and Celilo Falls. 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 Hood」の詳細全文を読む スポンサード リンク
|