Approximately 4 1/4" x 9 1/4" folded; 25.5" x 37.75" fully opened</br>Scale = 1:50??000</br>Map Revised - 2006</br>Features Included: Isle Royale?? Washington Island?? Grace Island?? Johns Island?? Thompson Island?? Amygdaloid Island?? Belle Island?? Passage Island?? Windigo?? Minong Ridge?? Greenstone Ridge?? Feldtmann Ridge?? Malone Bay?? Siskiwit Lake?? Lake Richie?? Chickenbone Lake?? Moskey Basin?? Rock Harbor?? and much more.</br>Waterproof</br></br>Product Description</br></br><b><p>? Waterproof ? Tear-Resistant ? Topographic Map</b></p><p>A rugged and isolated island on Lake Superior?? Isle Royale offers unparalleled opportunities for hiking?? backpacking?? boating?? paddling?? and scuba diving in solitude?? far from the sights and sounds of civilization. National Geographic??s Trails Illustrated map of"delivers unmatched detail and valuable information to assist you in your exploration of this remote wilderness. Created in partnership with local land management agencies?? this expertly researched map features key areas of interest including Passage Island?? Rock Harbor?? Windigo?? and many shipwreck sites.</p><p>Whether day hiking or backpacking to remote campsites?? the map??s clearly marked trails with mileage between intersectio