Categories DavidGreen/red: lichen on sandstone cliff face Post author By David Post date 31 October 2015 Lichen growing on the near-vertical face of the sandstone by Lavington’s Hole in Bridgnorth, sufficiently long-established to help form a base for other plants to begin to colonise the rocky surface. ← Verdigris mushrooms in roadside grass → Glossy black tree peony fruit