The 26 November 1975 , Mr. Ollman , Had gone to the lake of Terrasse Located on the right bank of ' Isère (known French River), to fish. Returning home he decided to stop at a certain angle of the river Isère for the same reason. To reach this place, Ollman, had to stop at the level crossing Grenoble-Chambéry railway . Entirely coincidentally, raised his head while looking through the windshield, was attracted by something in the sky which he described as "a subject round , red , very bright From well defined contours and slightly larger than the full moon. "The witness also reported seeing around it a orange halo . Were 18:30 and the night had already fallen by showing a clear, starry sky, could not be the sun The object remained motionless in front of the wall of the mountain Dent de Crolles (2'062 m), until, suddenly began to descend perpendicularly and, again a standstill, it died completely. Only a few seconds later, however, the UFO was re-made and the path to the contrary, ie went back vertically until you return to the point that he was party, the fact that he repeated the operation by moving to the right, stopping and coming back again to square one. At this point the witness again because the level was raised, but after 800 meters saw the object is stationary, but only for a moment: just went away after a dizzying speed to Mount Chamechaude (2'082 m).