Every now and then, the humans do something interesting. This is one of those times. You're looking at a fieldstone chimney--a real fieldstone chimney. This isn't one of the copycats available today. This isn't a prefab kit. This is the real McCoy. This building on Orr's Island has certainly seen its better days in a bygone century or two, but the fieldstone chimney is remarkable. How I love to see it! You can also see the large fieldstone foundation supporting the house. These people built with what they had available to them in the immediate area. There was no ordering exotic building products.
It's a small house and it's still being used, although no longer as a home. It's a testament to the excellent skills people had a long time ago when they had very few tools, if any. If you ever get a chance to see a fieldstone chimney up close--a real one--do it. Touch it. Connect with the past and you'll be better for it.