I think the phenomenon/area in question is the Beringia land bridge during the last ice age: http://en.wikipedia.org/wiki/Beringia. The connection between North America and Siberia. Somewhere up around where those Deadliest Catch guys go crabbing.
But regardless, we do talk funny, and the original road up that way was only put in in 1940, with the current incarnation of the Icefields Parkway opening in 1963. Still a lonely road in the off season. No cell reception and fairly minimal winter maintenance (compared to major highways).
The 'light of day' is up at the foot of the glacier which has retreated significantly in the past decades. They have markers on the ground showing previous extents: 1930, 1940, 1950 etc. Not rock layers or anything, just the basal moraine of the glacier which now sits exposed for all to see.
Tons of stuff to see and do up there. A wonderful place, especially during the off season. Mountains, glaciers, and forests for miles.
Thanks - I see now, this is way after the last Ice Age - thanks for the reference - learnt something new. And I now understand the 'light of the day' the glacier floors or all the different ones are getting exposed as the planet heats up. Thank you. And yes, one needs to visit, what is the ideal time of year i.e. least road disruptions, great views and perhaps like Kitchener, your older one - walk upto that giant Athabasca glacier, it really looks big frankly comparable at least in his picture to the Vatnajokull in Iceland.