Scotland’s geology is incredibly varied, this small country has a fantastic variety of rock types formed over a vast reach of geological time. The best place to see this variety is on Scotland’s pebble beaches. How do pebbles form and why do some survive better than others? What processes result in some beaches having a wide range of pebble types and sizes, and others being dominated by a single rock type? What can a pebble tell you about Scotland’s past? Join me for a tour of my favourite beaches and their pebbles.