gap between the Hermit and Sir Donald ranges of the Selkirk Mountains, in Glacier National Park, southeastern British Columbia, Canada. It was named for Major A.B. Rogers, who explored it in 1881 as a practicable route for the main line of the Canadian Pacific Railway. Despite its relatively low elevation (4,354 feet 【1,327 m】), attempts to lay track through the pass cost so many lives from avalanches down its steep valley sides that instead the 5-mile- (8-kilometre-) long Connaught Tunnel was built in 1916 beneath the pass. A scenic section (protected by huge snowsheds) of the Trans-Canada Highway was completed through the pass in 1962. Another railway tunnel, the 9.1-mile- (14.6-kilometre-) long Mount MacDonald Tunnel, was built beneath the pass to reduce track grades for westbound trains and was completed in 1988; eastbound trains now use Connaught Tunnel.