Short story. In 1947, on one of the slopes of the French mountain Dent de Crolles, a strange object appeared. It was a sort of iron pipe, about 200 meters long. The object displayed some very interesting features. Six hundred years earlier, in the area of today’s Montenegrin village of Tserovo, the same happened. The slope and the thing. So, the question is: What is the meaning of these events?