 The far southern end of Fort Valley also contains a small highland sub-valley called Crisman's Hollow, between Catback and Kerns mountains.Duncan's Knob at 2,800 feet, on Catback Mountain, and Strickler's Knob at over 2,700 feet on Masanutten Mountain are the two highest points in the Fort Valley Ridgeline.In addition, there are several other named smaller mountains, knobs, notches and mountain gaps within the ridges of Fort Valley.