Geology from a Churchyard – A Tombstone Trail Round St. Mary’s, Hornsey By Eric Robinson This illustrated booklet, written by an eminent local geologist, provides an informative account of the materials, design and features of St. Mary’s 18th and 19th century gravestones and tombs. [Read more…] about Geology from a Churchyard – A Tombstone Trail Round St. Mary’s, Hornsey