- Nelson's Column and base (1843): built of Foggintor Granite of
Permian age from Dartmoor; Nelson's statue (Bailey, 1842),
carved of Craigleith Sandstone from near Edinburgh. - The
bollards, walls and statue plinths in the Square are of grey
Aberdeen Granite. - Inlaid strips of Cornish Granite with big
feldspar crystals occur throughout the Square. - Charing Cross
Underground Station (Bakerloo Line). Much of the London
Underground passes through London Clay. - 'Chequerboard' pavings
of red Mansfield Sandstone, of Permian age, and white Portland
Stone. Portland Stone is a hardy white limestone of Jurassic
age. - Sandstone pavings from quarries near Edinburgh. Learn
more about Trafalgar Square's building stones in the Holiday
Geology Guide available from the BGS Bookshop