The IBT Hikers Guide is invaluable for hikers who embark on the great adventure of the Idaho Boundary Trail - 2,500 miles of mostly uncharted territory. For the hiker, the guide offers essential information about water resources, terrain, general route finding, and possible camp sites. In keeping with the adventurous spirit of the IBT, the guide does not provide a turn by turn description. It requires the hiker to use a GPS in concert with the guide.