How is it possible? How can they all be so jaw-droppingly, picture-perfect blue? The vast rivers and lakes beside the saw-toothed Canadian Rockies of central Alberta are an otherworldly, electric shade of turquoise. Staring at them makes you wonder if you walked out of reality and into a surreal Instagram.adcelannotate = {"mobilepaywallcategory" : "MOBILE_PREM-TRAVEL","nativepaywallcategory" : "NATIVE_PREM-TRAVEL"};