Conserve School - Land O' Lakes   Nicolet College Outdoor Adventure Series - Rhinelander   North Lakeland Discovery Center A non-profit organization forged by a partnership between North Lakeland Elementary School and the communities of Boulder Junction, Manitowish Waters, Presque Isle and Winchester.  Situated in the heart of Northern Wisconsin's Lakeland area, the center's mission is to explore the region's natural, cultural and historical resources. The Center will endeavor to maintain and enhance our northwoods identity and quality of life by providing a gathering place for both children and adults.   Northwoods Wildlife Center - Minocqua   Trails North - John Bates - Manitowish Featuring guided canoe/kayak, walking and skiing tours of the Northwoods. Tours are lead by naturalist and author John Bates.   Tree for Tomorrow Education Center - Eagle River