[have_unit]
            side=1
            x=$x1
            y=$y1
            [filter_location]
                [filter_adjacent_location]
                    x={_TARGET_X}
                    y={_TARGET_Y}
                    [and]
                        terrain="*^Ngl\,*^Ngl/"
                        radius=1
                    [/and]
                [/filter_adjacent_location]
            [/filter_location]
        [/have_unit]