The steep outline of Parkhouse Hill near Earl Sterndale reveals a Carboniferous reef margin shaped by later faulting and erosion. Brachiopods, corals and crinoid fragments can be seen in its limestone. This protected hill is a place for looking and photographing: leave fossils in place, follow permitted routes and keep clear of steep faces and summit drops. Carboniferous, Outcrops, Rating: ♦♦♦