Group of Riders in the Battle of Anghiari - by Leonardo da Vinci

The Battle of Anghiari (1505) is a currently lost painting by Leonardo da Vinci, at times referred to as "The Lost Leonardo", which some commentators believe to be still hidden beneath one of the later frescoes in the Salone dei Cinquecento (Hall of the Five Hundred) in the Palazzo Vecchio, Florence. Its central scene depicted four men riding raging war horses engaged in a battle for possession of a standard, at the Battle of Anghiari in 1440.

Many preparatory studies by Leonardo still exist. Group of Riders in the Battle of Anghiari is one of them.