Broom Pit, west of Orford, preserves unusually shelly Pliocene Coralline Crag. Its cross-bedded sands, bryozoans and contrasting weathered layers record an ancient shallow sea and later changes in fossil preservation. This woodland pit is private, so permission and an agreed approach are essential before a visit. Pliocene, Disused Pit, Rating: ♦♦♦♦♦