We vusited the portion of the Columbia Icefield accessible from the Icefields Parkway in Jasper National Park, Canada. We had a hard time choosing which photograph showed the receding bulk of the icefield best. This one shows a huge pile of moraine that used to be covered by ice. The park personnel has tracked the edge of the ice field from back in 1948 or maybe even before. Is this evidence of global warming? Probably. The Columbia Icefield is the source of the Columbia River. The parkway is a lengthy approx. 115 mile drive through some really awesomely beautiful country.