Its leaky roof rested on ten-foot-high walls that were originally constructed as a sandwich: vertical rock faces of rounded fieldstone on the outside with a mud-mortar/rubble stone mix on the inside.

Sometimes sinuous, sometimes geometric, stone walls are a signature feature of the New England landscape, a latticework of bare rock in an otherwise plant-covered world. When viewing them up close ...

But there was, in fact, a very substantial stone wall that ... on the rock honors Charles Hazlett, commander of Hazlett’s battery, who was killed during the fighting on Little Round Top.

“These folks would build [stone] walls to their specification. They would use the old farmers' walls and build nicer-looking walls out of them, [or] use rock that came from a quarry ...

That’s what you’ll be saying if you look at stone walls as more than just rows of ... They showed S-shaped layers, or strata, in the rock, and that reflects the origins of the Appalachians.” ...