Just think the settlers built all those walls as they dug up the field for crops and the stone walls were fencing, talk about a lot of work. My current house is on what was a large cow farm years ago, stone walls are still there but the farm got chopped up into house lots we all have 1-2+ acres so we're spread out.
I have a 350 foot stone wall that was partially in disarray when we bought the land. I've slowly rebuilt it over the years even though I was told it was illegal since it's a boundary wall, no one complained and it looks good.
When I put my lawn in I dug up some big boulders and used them in the landscape, they look good and the less distance I had to move them the better because they're frigging heavy.
Not that expensive, there were 4 of us, drove up stayed at a nice Holiday Inn near the water, two days fishing including tip for first mate, total cost was $350. breakfast included at hotel so we just bought lunch and dinner or one day just one meal because we ate a little later and were full.