Quote Originally Posted by CalOldBlue View Post
Note: there are several grouping strategies that could lead to the example above, your challenge is to pick the right one.
I was first thinking the Missouri River, but I think this could well be the headwaters of the Mississippi River?

Itasca State Park in Minnesota?

(Photo by Rod Ness)

Oh wait, you said a National Park -- well, that can't be the Mississippi then

Mark