It borders the higher Musconetcong Mountain to the northwest, the Delaware River to the west, Amwell Valley to the south and the lower lying areas of the Newark Basin to the east.
From there it follows a curved path west of the South Branch Raritan River until it meets with the Musconetcongs.
Another feature in Holland Township called Gravel Hill also rises above the rest of the plateau.
There are numerous cliffs along the Delaware where the plateau meets it such as Milford Bluffs where prickly pear cacti grow, a rarity in Hunterdon County.
[2] The plateau includes the boroughs of Milford and Frenchtown, as well as part of the borough of Flemington and parts of Kingwood, Raritan, Franklin, Union, Bethlehem, Alexandria, Delaware, and Holland townships.