The North Shore of Lake Superior is one of Minnesota's favorite playgrounds. Just beyond the Lester River northeast of Duluth, it's a drive into wilderness. Small homes on large lots and a few motels dot the rugged rock shoreline, and the generous expanse of the Lake gives a feeling of solitude. But that may change dramatically in the next few years as a planned sewer line is laid down from Duluth to Knife River or even as far as Two Harbors. Advocates say the sewer line is needed because most of the individual septic tanks along the shore are failing, allowing raw effluent to drain into the ground water and the lake. But a sewer would allow more development, which critics say could irrevocably change the character of the North Shore, and actually bring MORE pollution to the area. Minnesota Public Radio's Stephanie Hemphill has the second in a series of reports about development along the North Shore.