Where do ya see a ramp? And why in hell would they build a ramp leading up to the wall? I think what you're looking at is called a "Brace".
Nah, in the tiny pic at the top of the thread, the completed brown wall section looks like an oblique ramp. It’s like an optical illusion. Sometimes you can see completed fence; other times I see a nice smooth ramp to make it easy for Pedro to “come on over!” Now that I see the completed wall, it’s harder to see the ramp.
Look at the small pic, stand back, cock your head and squint. It’s right there.