Those are beautiful pictures apex.
Those stone fences remind me of some of the ones here in Northern California.
In our part of the country they were constructed by Chinese, Italians, and Mexicans, depending on who was around at the time. And each type has it's
own distinctive features. The Italian and Chinese types tend to be quite similar, looking alot like the ones in your photos.
The Mexican types are quite different, being much more angular in shape, with a lot of shaping done to the stone, and the use of mortar. The Italian
and Chinese type tend to be more of a stacked kind of structure, using un-hewn field stones for the material, and no mortar.
There are still traces of short rock wall work done by the Indians in this area for different purposes, but most of those have succumbed to the
ravages of time, artifact collectors, and farming/construction.
I'd love to actually learn to do more than point and shoot. I love the subjects I
choose...no matter how odd...even spiders which I hate...but to make photography into art....that is amazing. 
) 
