One of several nature preserves in the Pine Creek watershed, Little Rocky Hollow is a wonderful example of a hardwood-hemlock ravine system. Spectacular rock formations of Mississippian age Black Hand sandstone tower over the stream valley supporting an enormous collection of ferns, lichens, mosses and liverworts.
The valley floor supports yellow and black birch, tulip, sycamore and eastern hemlock while the uplands include various oaks, hickories and native Virginia pine. Wildflowers of note include sullivantia (Sullivantia sullivantii), creeping phlox (Phlox subulata), trailing arbutus (Epigaea repens) and roundleaf catchfly (Silene rotundifolia).
