The details involved in pouring a wall are substantial. You can see how much work in steel rebar and wire is added to reinforce the concrete.
Below, the wall along Highway 106 is substantial. However, the white PVC drains you see in the wall are 1 foot above the finished grade. the red line I inserted is the estimated ground level. That takes a lot of height out of the wall, making it appear much smaller. Also, landscaping will break up the wall.
Below, the upper wall is similar in that only the green arrows will be visible. The red line signifies ground level.
Below, working in the rain isn't so bad provided you can build a tent. Working in Highlands during the winter, one must be creative. If we simply wait for good weather, the work isn't getting done.