Twilight at the 'Morant's Curve' offers a view of the frozen Bow River and the Canadian Pacific Railway at Banff National park near Lake Louise late on December 7, 2013. The region's temperatures keep around minus 36 degrees Celsius (minus 32.8 Fahrenheit).    AFP PHOTO/JOE KLAMAR        (Photo credit should read JOE KLAMAR/AFP/Getty Images)