The Kishacoquillas Valley, known locally as both Kish Valley and Big Valley, is an enclosed anticlinal valley in the Ridge-and-valley Appalachians of Central Pennsylvania, and is located in Mifflin and Huntingdon counties.
Location: Mifflin County, Pennsylvania
Length: 27 miles (43 km) approx. northeast-southwest
Width: 2.5 miles (4.0 km) approx.
Population centers: Allensville, Belleville, Reedsville and Milroy
Borders on: Stone Mountain (west/north) · Jacks Mountain (east/south)