The Monongahela National Forest is located along the Allegheny Mountain Range of the Appalachian System entirely within the State of West Virginia. It extends from near Eglon, Preston County in a southwesterly direction for a distance of about 100 miles to within six miles of White Sulphur Springs, Greenbrier County. From east to west it extends from near Petersburg, Grant County to the junction of Cherry River with Gauley River in Nicholas County, or a distance of about 80 miles. The total area of 1,641,981 acres contains many of the most interesting botanical and scenic areas of the State. This area is little more than one-tenth the total area of West Virginia yet because of a considerable diversity of altitude, temperatures, geologic strata, rainfall and other factors, it contains more than three-fourths of the total number of species of plants collected in the State.