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Portage Lake (Alaska) : ウィキペディア英語版 | Portage Lake (Alaska)
Portage Lake is a glacial lake in the Chugach National Forest of Alaska. It sits in a long, heavily glaciated valley, and abuts the calving face of Portage Glacier at its southern end. The lake has only become visible since approximately 1914, with the rapid retreat of Portage Glacier.〔(【引用サイトリンク】title=United States Geological Survey (USGS), "A Century of Retreat at Portage Glacier, South-Central Alaska" )〕 ==Access and Recreation== The western shore of Portage Lake is easily accessed via a large parking lot at the lakeside Begich Boggs Visitor Center, just off the Portage Glacier Highway. Portage Glacier Cruises operates a short glacier cruise, which takes visitors near the face of the glacier.〔(【引用サイトリンク】title=Portage Glacier Cruises )〕 Recreational boating in the lake was illegal in the past, due to rolling icebergs and the calving face of Portage Glacier at the far end of the lake, but is now legal, though proper precautions must be taken for the challenging conditions. During winter and spring, the lake is a popular destination for cross-country skiing, kite skiing,〔(【引用サイトリンク】title=Anchorage Daily News, "Snowkiting on Portage Lake" )〕 mountain biking,〔(【引用サイトリンク】title=Anchorage Daily News, "In order to ride on the ice, cyclists add studs to their tires for traction" )〕 skating, snowshoeing, and hiking. The "crust skiing" season of mid spring is especially prized by skiers.〔(【引用サイトリンク】title=Alaska Performance Backcountry Skiing: Crust Skiing 101 : Popular Crust Skiing Spots Near Anchorage )〕〔(【引用サイトリンク】title=Anchorage Daily News: "Crust Skiing on Portage Lake" )〕 Skiers must take appropriate precautions near Portage Glacier, as the constant movement of the glacier's calving face breaks up even thick lake ice and can create patches of open water or unstable ice near the glacier's face, even in midwinter.
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「Portage Lake (Alaska)」の詳細全文を読む
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