In parts of its eastern stretches, Muldraugh Hill is little more than a slight hill, but in some of the western areas, it is represented by extensive areas of knobs. This landform consists mostly of siltstones and shales, with some minor limestones, lying between the limestones and dolomites of the older Bluegrass and the limestones of the newer Pennyrile. Rock outcrops are minor except where the overlying limestones are exposed in the north of Fort Knox.
