the old roman 's hair was pale in the moonlight , and he wore the toga in which he had been buried , with , beneath it , a thick woolen vest and leggings because this was a cold country at the edge of the world , and the only place colder was caledonia to the north , where the men were more animal than human and covered in orange fur , and were too savage even to be conquered by the romans , so would soon be walled off in their perpetual winter .