That picture is taken looking towards the displaced threshold of 20. The runway is being resurfaced. You can see the dotted out markings for repainting the centre line or the white arrows pointing to the DISP THRES. They must be using the "not available" part of the runway as a taxiway. You can see the gable markers running across the end of the RWY Strip further up. The U/S cones are marking areas inside parts of a temporary (or permanent ?) taxiway strip, so they are fine where and how they are.