The highest free-falling waterfall in the state, Williamsport Falls, is located in downtown Williamsport; a stream named Fall Creek flows through the town and falls over a sandstone ledge less than from the county courthouse. Northeast of Independence is the Black Rock Barrens Nature Preserve, a rare siltstone glade area that, with the adjacent Weiler-Leopold Nature Reserve, supports a diversity of flora including sessile trillium, phlox and wild hyacinth in the moist lowlands and serviceberry, rue anemone, birdsfoot violet and yellow pimpernel on the drier slopes. Big Pine Creek is the county's largest waterway after the Wabash River, and segment of it is designated by the Indiana Department of Natural Resources as a state natural and scenic river and passes near Fall Creek Gorge Nature Preserve, an area of cascades and potholes.