One of the more charming habits of the day was silver hoarding. Let’s not get into how they got the silver. But Scandinavians at the time clearly felt that for some reason a lot of it should be hidden and left. And so, in some parts of Scandinavia, silver hoards of the 9th, 10th and 11th centuries keep popping out of the ground. - In northern Norway, though, hoards are extremely rare. So it came as a surprise to everyone last August when two boys in Tromsø found one in a rock cleft.