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Highway 4, known more commonly as the Ingraham Trail, extends from Yellowknife, Northwest Territories to Tibbitt Lake, approximately east of Yellowknife. It was built in the mid-1960s as the first leg of a 'road to resources' into the interior of the Arctic, stopping far short of its ultimate goal. The highway is designated as a northern/remote route of Canada's National Highway System. Although the highway serves primarily recreational activities and area residences in this lake-dotted country it is, after the ice break-up on Great Slave Lake, the only access to Dettah from Yellowknife. The small Dene community is about from Yellowknife by ice road in winter or using the Ingraham Trail. For about a month in late winter, a winter road to Lac de Gras is opened to trucking of mining supplies, the junction being along the Ingraham Trail. The road condition has suffered due to its frequent use by heavy trucks. This is shown on the first season of the American reality television series, ''Ice Road Truckers'', which airs on History. The Tibbitt to Contwoyto Winter Road also extends from the end of the Ingraham Trail to Contwoyto Lake in Nunavut, forming Nunavut's only connection to the road network in the rest of Canada. The Ingraham Trail is named after Vic Ingraham, a pioneer Yellowknife businessman of the 1930s–40s. ==Ingraham Trail details== Since January 2014, the road bypasses Giant Mine through a realignment that originates off Highway 3, approximately two kilometres from the Old Airport turnoff. At the road crosses the Yellowknife River followed by the Dettah turnoff at . After this the road passes several lakes including Prosperous (), Pontoon () and Prelude (, which is followed by Cameron Falls (). The road then passes Reid () and Hidden () before reaching Tibbitt Lake ().〔(The Ingraham Trail ) map〕 The trail, which was paved as far as Prelude Lake, was chipsealed to Reid Lake in the fall of 2009, leaving the last as gravel. In 2014, Japanese tourist Atsumi Yoshikubo went missing during a visit to Yellowknife. She was last seen walking along the Ingraham between Niven and Jackfish lakes. After intense searches for a week, the Royal Canadian Mounted Police announced that information developed locally and in Japan suggested she had deliberately walked into the bush with the intention of ending her life. 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「Ingraham Trail」の詳細全文を読む スポンサード リンク
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