Eureka! We found it!
Saw the rock wall and was reminded of a book I read a few years back:
https://bookshop.org/p/books/stone-by-stone-the-magnificent-history-in-new-england-s-stone-walls-robert-thorson/12546095?ean=9780802776877&next=t
Saw the rock wall and was reminded of a book I read a few years back:
https://bookshop.org/p/books/stone-by-stone-the-magnificent-history-in-new-england-s-stone-walls-robert-thorson/12546095?ean=9780802776877&next=t