What On Earth?

Looking at the gazeteer for Minnesota, this landform is in Koochiching County in the last tier of counties this side of Canada. Given this area was the site of heavy glaciation and glacial lakes abound, I'm wondering if these odd smears of flowing land (which in total are dominant over several hundred square miles both in Mn and southern Canada) are bogs--partially-filled-in glacially-scoured depressions dominated by sphagnum moss. These areas are often farmed for such things as sugar beets and cranberries. I wonder: what accounts for the blue and other non-green colors in this odd land?
Does anybody have any experience from northern Minnesota to shed some light on this earthly mystery?
Comments
They are, at least in part, bogs, I think. There's a National Park headquartered just outside International Falls that encompasses quite a bit of bog - and shallow lakes. And deep lakes. I understand it's good canoeing.
Here's a link to the National Park: http://www.voyageurs.national-park.com/
Posted by: Teri | July 24, 2005 6:40 PM