Hock Cliff near Fretherne exposes an early Sinemurian succession of limestone, shale and mudstone beside the Severn. Ammonites, curved oysters and echinoderm remains record a varied Jurassic sea floor, while the tidal shore, slippery rocks and changing path conditions require careful planning and permission checks. Jurassic, Cliffs and Foreshore, Rating: ♦♦♦