East Lothian’s coastline is rich in geological features including sandstone and limestone layers. There are eye-catching hills, headlands and islands made of volcanic rocks. Near Dunbar, the Barns Ness Geology Trail has fossils formed 350 million years ago in a shallow sea near the Equator. You can visit one of the world’s most important geological sites, Hutton’s Unconformity at Siccar Point near Cockburnspath. During the 18th century James Hutton, father of modern geology, discovered Siccar Point and used it to illustrate his ‘Theory of the Earth’ and evidence of processes of erosion, deposition and uplift.