Snow cornice Snow cornice A snow cornice or simply cornice (from the Italian cornice meaning "ledge") is an overhanging edge of snow on a ridge or the crest of a mountain and along the sides of gullies. They form by wind blowing snow over sharp terrain breaks (e.g. the crest of the mountain) where it attaches and builds out horizontally. This build-up is most common on the steeper and leeward sides of mountains. Cornices are extremely dangerous and travelling above or below them should be avoided. When a cornice "collapses", it breaks in from the cornice to the top of the peak;
Sourland Mountain Strawberry Hill. A knob in the shallow valley between Strawberry Hill and the southernmost stretch of the main ridge forms Belle Mountain. Goat Hill comprises the highest point of the main ridge before reaching the southernmost end of Sourland Mountain at the Delaware River. Partly adjacent to Sourland Mountain is a sizeable traprock ridge which extends eastward from Pennington Mountain for approximately nine miles, forming (from west to east) Mount Rose, Rocky Hill, and Ten Mile Run Mountain. West of the main ridge, near Flemington, is Prospect Hill, a volcanic remnant lying along the western edge of the Amwell Valley.