"The field guide you hold in your hands began with a frog. Well, kind of--Frog Rock in New Boston, New Hampshire. When outdoor writer Dan Szczesny and his six-year-old daughter hiked to the landmark boulder that looks remarkably like a frog, Uma asked her dad if there were any other famous rocks in New Hampshire. Turns out, there are many! And so began a state-wide adventure to visit, document, and learn about some of the state's most famous rocks...