The simple 'arch' of dry stone walling

There was already an old wall on this property  with a small opening in it. I was asked by the owner to build a dry stone arch over the opening. 
The arch wasn't difficult. I think it took me a day to build. Every time I visit there I check out how it's doing. It's doing fine. 
There's something magical about an arch. As you walk through it's easy to imagine entering a different dimension or a different time zone.
I don't think there is anything more satisfying to do with stones than build a permanent dry stone arch.