1) Geographic area 2) Geographic region 3) Geographical area 4) Geographical region 5) He crossed these mountains 6) In or relating to appalachia 1) State university 
• (a.) Of or pertaining to a chain of mountains in the United States, commonly called the Allegheny mountains.
Ap`pa·la'chi·an adjective Of or pertaining to a chain of mountains in the United States, commonly called the Allegheny mountains. » The name Appalachian was given to the mountains by the Spaniards under De Soto, who derived it from the neighboring Indians. Am. Cyc. 
[adj] - in or relating to Appalachia
adjective in or relating to Appalachia
of or pertaining to the Appalachian Mountains. · of or pertaining to the region of Appalachia, its inhabitants, or their culture. · of or pertaining to the orogeny and accompanying intrusion that occurred in eastern North America during the Pennsylvanian and Permian periods.