Trails above the Morehead District (Cave Run Lake) visitor center snake around some of the tallest knobs in the northern section of the Daniel Boone NF. Big Limestone is 4.5 miles on trail north of the visitor center and has about 750 feet of vertical relTrails above the Morehead District (Cave Run Lake) visitor center snake around some of the tallest knobs in the northern section of the Daniel Boone NF. Big Limestone is 4.5 miles on trail north of the visitor center and has about 750 feet of vertical relief...almost a textbook definition of a mountain. Atop Big Lime (and neighboring Little Lime) are large cylindrical outcroppings of eroded sandstone, nipple-like, with a nice set of crowning boulders, despite the heavy thrush of undergrowth. As one travels southward, the boulders become progressively cliffline and serpentine...geographically similar to the Red River Gorge. If you're looking for about 100 miles of singletrack and isolation, Cave Run is the destination.