There are going to be a couple of retaining walls built out of concrete blocks in the courtyard garden. You can see the 3D view of the courtyard garden here.
There will be a dry stone wall in front of the blockwork, but the blockwork is there to ensure that the soil doesn’t push the wall over. Since we are on bedrock, there is hardly any need for the concrete, however, it does provide a level surface from which to build the retaining wall. This was the same concrete pump that we used to lay the foundations for the extension.
Half way through pouring the concrete, it started to rain.