The far southern end of Fort Valley also contains a small highland sub-valley called Crisman 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 or notches within the ridges of Fort Valley, and several minor gaps or lower points between the mountains accessible only by hiking trails.
The far southern part of Fort Valley includes a small highland sub-valley known as Crisman Hollow, situated between Catback and Kerns mountains. Duncan's Knob at 2,800 feet elevation is on Catback Mountain, while Strickler's Knob over 2,700 feet tall is on Masanutten Mountain. There are also several other named smaller mountains, knobs, or notches within the ridges of Fort Valley, and some minor gaps or lower points between the mountains that can only be accessed via hiking trails.