Salisbury Crag

Salisbury Crags are a series of dramatic basalt cliffs and rocky outcrops forming the western escarpment of Holyrood Park in Edinburgh, Scotland, running below the summit of Arthur's Seat. The crags rise to approximately 160 metres above sea level and their distinctive profile forms a prominent part of Edinburgh's skyline when viewed from the New Town and Princes Street. They are of significant geological interest and were studied by James Hutton in the 18th century as evidence for his theory of plutonism, which became a foundation of modern geology. A path known as the Radical Road runs along the base of the crags, constructed in 1820 to provide work for unemployed weavers.