Lecture on stone-wall building, with miniature stone wall built

Brian sez, "My library hosted Kevin Gardner, a New Hampshire native and builder/restorer of traditional New England stone walls. He talked about the history of stone walls in New England, and how they shaped - and were shaped by - the landscape and circumstances of the region and country. I thought BoingBoing readers would be interested in the talk alone, but the bonus is that the entire time he's talking, he's also building a miniature stone wall from rocks he brought in two five-gallon buckets."

Chelmsford Library Anytime: Exhibits and Videos (Thanks, Brian!)