The “fence” is the yellow pickets and rusty cable along the ditch in the 3rd and 4th pics here. The pronounced seam in the concrete through the center of the monument is also the boundary. The place was crawling with La Migra. I literally passed half a dozen trucks and SUVs. There was one parked on the ridge north-west of the monument the whole time I was there. Two vehicles stopped when I was driving down there and spoke with me.
There is not really any “acceptance” aside from uploading them. I suppose if something were incorrect, some editor might eventually stumble across it and remove it.
I might try to go back earlier in the day to get better contrast on the bilingual reverse-relief plaques on the east side. The text is hard to read in the shade. A step ladder would be helpful as well, so I could get a more direct, less oblique, shot.