Alexander "Sandy" Thom (26 Mairch 1894 – 7 November 1985) wis a Scots ingineer maist famous for his theory o the Megalithic yaird, categorisation o stane circles an his studies o Stanehenge an ither airchaeological steids.[1]

Long Meg and Her Daughters, the lairgest ensaumple o Alexander Thom's Type B Flattened Circle


  1. Robin Heath (May 2003). Alexander Thom: Cracking the Stone Age Code. Bluestone Press. ISBN 978-0-9526151-4-9. Retrieved 28 April 2011.