Funny you mention this now. I just got an email recently containing a bunch of "amazing frozen wave and striped iceberg" pics, supposedly taken on lake Winnipeg. It didn't add up for me as I know a fair bit about that lake seeing as I'm from here and all. So I did a quick search, and sure enough the original email going around from 2008 reported those same pics as being from Lake Michigan, another falsehood.
They are real, and are definitely from the antarctic region roughly 1700 miles south of Capetown S Africa.
http://www.snopes.com/photos/natural...edicebergs.asp