Bob Parks (@bobparks) writes from the hills of Vermont. He is an avid runner (2:54:20, Boston Marathon, 2014) and a huge fan of new inventions. The electronic maps on phones are much easier to use ...

A topographical map shows you all kinds of things in nature in an area. - It mainly shows how high things are, and how up and down the trails become--how steep. - Hey, we're in luck!