The Carboniferous shore at Hartley and Seaton Sluice reveals coal seams, rooted soils and sandstones formed in an ancient river-and-wetland landscape. Plant impressions and non-marine shell bands make this a rewarding place to observe fossils, while faults and channel cut-outs explain why the beds change so abruptly along the coast. Carboniferous, Cliffs and Foreshore, Rating: ♦♦♦♦