This updated, 2-sided, pocket-sized, full-color map is about 16 in. X 29 in. when opened.  
 
New features: All known trailside potable and non-potable water sources, including GPS coordinates.  Nineteen historic site markers, including GPS coordinates.   Instructions how to obtain a free geo-referenced TMR map for your cellphone. Requirements for the Ten Mile River Historical Trails award.  Contains small detailed maps of all the TMR camps.
 
Absolutely necessary if you are doing any serious hiking around TMR, or if you just want to find your way around TMR.