PEBBLE SPOTTERS GUIDE (NATIONAL TRUST)

Hidden in plain sight along every shoreline is the beauty of a smooth pebble - an amazing consequence of wind, sea and time, with a story to tell about the landscape. This spirited and richly illustrated guide gives practical advice on how to identify 40 pebbles and where to find them - from the humble flint to feldspar veins, spotted slates, serpentinite, granite ovoids and the rare porphyry - making a treasure hunt out of any trip to the beach or riverbank.