The only field guide to stone walls in the Northeast. Exploring Stone Walls is like being in Thorson's geology classroom, as he presents the many clues that allow you to determine any wall's history, age, and purpose. Thorson highlights forty-five places to see interesting and noteworthy walls, many of which are in public parks and preserves, from Acadia National Park in Maine to the South Fork of Long Island. Visit the tallest stone wall (Cliff Walk in Newport, Rhode Island), the most famous (Robert Frost's mending wall in Derry, New Hampshire), and many more. This field guide will broaden your horizons and deepen your appreciation of New England's rural history.