[davidp]

Completely unrelated: I zoomed out on your Google Maps link and saw a suspiciously circular lake formation:

https://maps.google.com/maps?q=cap+chat+quebec&hl=en&ie=UTF8...

Yep, it's the 4th most powerful known meteor impact: http://en.wikipedia.org/wiki/Ren%C3%A9-Levasseur_Island

I love Wikipedia.

[jacquesm]

Go to Sudbury, Ontario for an even larger one! (they're still mining that one today).