Video: Summer activities for kids: hunt for fossils A young National Trust volunteer shows how easy it is to go hunting for fossils and bones in the limestone hills surrounding Ilam Park. After making rubbings of the fossils he finds, he then climbs to a limestone promontory called Lover's Leap, where he finds fossils "everywhere." Ilam, in Ashbourne, Derbyshire, is a National Trust property but was once a small village with a grand hall. It is found on the White Peak Estate, which includes Ilam Park, Dovedale and the Hamps and Manifold Valleys. The river Manifold, with its boil holes, passes through the park and there are woodlands of lime and yew trees, including ancient Hinckley Woods. The National Trust also recommends fossil-hunters visit the Seven Sisters chalk cliffs in East Sussex.