KATIE ARMSTRONG, NG MAPS That koan ... Pharr Davis, a National Geographic Adventurer of the Year who set what was then the overall fastest time on the Appalachian Trail in 2008, agrees.

The Northern Forest Canoe Trail offers miles and miles of adventure through the northeastern United States and part of Canada.

The vast ocean of Jefferson National ... maps so old that some dated to the Civil War. An image from Myron Avery's scrapbook shows the Pinnacles of Dan in 1932. (Myron Avery/Courtesy of ...