Athabasca Glacier

I've recently visited the glacier, and it's interesting to see how the ice has receded dramatically. There are signs marking the position of the glacier's end at various points, which illustrates the retreat quite well.

But a word of caution: it's not to be used as an example of industrial activity causing climate change. The terminal moraine (where the glacier turned from advancing to retreating) is a long way from the current glacier snout. This is because it started retreating over 200 years ago (pre-industrialisation) and was already much smaller by the time the 20th century began. The glacier was already in full retreat before large-scale world population and before North America was "tamed".