The whetstone which, according to legend, gives the neighbourhood its name, as soldiers supposedly sharpened their swords here before the 1471 Battle of Barnet. Sadly that is not true (see http://www.friern-barnethistory.org.uk/userfiles/file/Newsletters/2010-Onwards/2014/No-57-Apr-2014.pdf p.4, and https://www.barnet.gov.uk/libraries-old/local-studies-and-archives/pocket-histories/finchley-friern-barnet-and-totteridge-18).