The Healy successfully rammed and broke through this ridge in an area 45-feet thick requiring only three attempts. Observers filled the bridge to watch this thrilling event. A line or wall of broken ice forced up by pressure. It may be fresh or weathered. The submerged volume of broken ice under a ridge that is forced downward by pressure.
Fragments are visible from the air at low altitude.
Ridge with peaks slightly rounded and slope of sides usually 30 to 40 degrees. Individual fragments are not discernible. The visible peak of a ridge. Multi-year ice ridges have had fall and winter and perhaps years to freeze solidly. In first-year ice ridges, large blocks or chucks of ice created by the pressure and breaking up of the floe can be observed.