#London Walk of the Week: Urban Geology The Building Stones of Trafalgar Square & St Martin's Lane

Every Sunday we’ll pluck just one walk from the vast London Walks repertoire and put it centre stage.

You can check out the full schedule at www.walks.com.

But if you only take one walking tour this week, why not make it…

URBAN GEOLOGY - THE BUILDING STONES OF TRAFALGAR SQUARE & ST. MARTIN'S LANE

Saturday 20th February 2016 meet at Leicester Square Tube, exit 1

Does exactly what it says on the tin. Guided by Ruth, a top flight professional geologist.

Here's Ruth on Twitter after her last Urban Geology outing, linking to an article about her work in The Wharf newspaper…

And a great walk to look at some of these stones with @londonwalks yesterday! Thanks to everyone who came along. https://t.co/37w5FURS6r

— Ruth Siddall (@R_Siddall) January 24, 2016

A London Walk costs £10 – £8 concession. To join a London Walk, simply meet your guide at the designated tube station at the appointed time. Details of all London Walks can be found at www.walks.com.