Section 9.257 - Tip of the Mitt(a)Name. The name of the viticultural area described in this section is "Tip of the Mitt". For purposes of part 4 of this chapter, "Tip of the Mitt" is a term of viticultural significance.(b)Approved maps. The 2 United States Geological Survey (USGS) 1:250,000 scale topographic maps used to determine the boundary of the Tip of the Mitt viticultural area are titled: (1) Cheboygan, Michigan, 1955; revised 1981; and(2) Alpena, Mich., US-Ontario, Can.; 1954.(c)Boundary. The Tip of the Mitt viticultural area is located in all or portions of Charlevoix, Emmet, Cheboygan, Presque Isle, Alpena, and Antrim Counties in Michigan. The boundary of the Tip of the Mitt viticultural area is as described below:(1) The beginning point is on the Cheboygan map, at the point where the Mackinac Bridge intersects the southern shoreline of the Straits of Mackinac. From the beginning point, proceed east-southeasterly along the shoreline of the South Channel of the Straits of Mackinac and Lake Huron, crossing onto the Alpena map and continuing to follow the Lake Huron shoreline and then the Thunder Bay shoreline to the point where the Thunder Bay shoreline intersects the common T31N/T30N township line south of the city of Alpena and north of Bare Point; then(2) Proceed northwesterly in a straight line to the intersection of an unnamed medium-duty road known locally as Long Rapids Road and an unnamed light-duty road known locally as Cathro Road; then(3) Proceed west in a straight line to the line's intersection with State Highway 65 and an unnamed light-duty road known locally as Hibner Road; then(4) Proceed northwesterly in a straight line to the intersection of the Presque Isle, Alpena, and Montmorency county lines; then(5) Proceed west along the southern boundary of Presque Isle County, crossing onto the Cheboygan map, to the point where the Presque Isle county line becomes the southern boundary of Cheboygan County, and continuing along the Cheboygan county line to the intersection of the Cheboygan county line with the eastern boundary of Charlevoix County; then(6) Proceed south then east along the Charlevoix county line to the intersection of the Charlevoix county line with the eastern boundary of Antrim County; then(7) Proceed south along the Antrim county line to the point where the county line turns due east; then(8) Proceed west in a straight line to the eastern shoreline of Grand Traverse Bay; then(9) Proceed north-northeasterly along the shorelines of Grand Traverse Bay, Lake Michigan, Little Traverse Bay, Sturgeon Bay, Trails End Bay, and the Straits of Mackinac, returning to the beginning point.