Potomac Gorge Riverside Outcrop Barren – CEGL006491
Sticky goldenrod (Solidago racemosa) and stiff-leaved aster (Ionactis linariifolia) on a vertical rock face in Mather Gorge near the mouth of Difficult Run in the Potomac Gorge. Great Falls Park (National Park Service), Fairfax County. © DCR-DNH, Gary P. Fleming