Deep Notch is sometimes used to refer to the entire section of Route 42 from Bushnellville at the county line to West Kill, where the road runs through the narrow valley of Bushnellville Creek between Halcott Mountain on the west and Mount Sherrill, both High Peaks of the range, to the east. The actual notch is the roughly section north of the upper tributary of the creek to West Kill. On the west is an unnamed peak known as Northeast Halcott or Sleeping Lion; to the west is a false summit of Balsam Mountain, itself a subpeak of Sherrill.