South Fork of the Shenandoah runs north-east, through the eastern border of Rockingham and the county of Page, to Front Royal in Warren county.
The North Fork and South Fork are separated by the Massanutten Mountain, which is connected with no other mountain, but terminates abruptly at both ends. Its northern end is washed at its base, just below Strasburg, by the North Fork. Its southern end terminates near the road between Harrisonburg and Conrad's Store on the South Fork, at which latter place the road through Swift Run Gap in the Blue Ridge crosses that stream. Two valleys are thus formed, the one on the North Fork being called "The Main Valley," and the other on the South Fork, and embracing the County of Page and part of the County of Warren, being usually known by the name of "The Luray Valley." The Luray Valley unites with the Main Valley at both ends of the mountain. There is a good road across Massanutten Mountain, from one valley to the other, and through a gap near New Market. South of this gap there is no road across the mountain, and north of it the roads are very rugged and not practicable for the march of a large army with its trains. At the northern or lower end of Massanutten Mountain, and between two branches of it, is a valley called "Powell's Fort Valley" or more commonly "The Fort." This valley is accessible only by the very rugged roads over the mountain which have been mentioned, and through a ravine at its lower end. From its isolated position, it was not the theatre of military operations of any consequence, but merely furnished a refuge for deserters, stragglers, and fugitives, from the battle-fields.
From Front Royal the Shenandoah River runs along the western base of the Blue Ridge to Harper's Ferry, where it unites with the Potomac, which here bursts through the mountains. The mountain in extension of the range of the Blue Ridge from this point through Maryland and Pennsylvania is called "South Mountain."
Strictly speaking, the County of Berkeley and the greater part of Frederick are not in the Valley of the Shenandoah. The Opequon, rising south-west of Winchester, and crossing
