Alexander Mosaic

The Alexander Mosaic is a Roman floor mosaic from the House of the Faun in Pompeii. It was made in 100 BC. It shows a battle between the armies of Alexander the Great and Darius III of Persia. It measures 2.72 x 5.13m (8 ft 11in x 16 ft 9in). The original is at the Naples National Archaeological Museum. The mosaic is based on a 3rd-century BC Hellenistic painting, by Philoxenos of Eretria.
The mosaic shows the Battle of Issus, between Alexander and Darius. Alexander won the Battle of Issus. Alexander won again two years later at the Battle of Gaugamela. 
Alexander and Darius.
The two main figures are easy to see. Darius has a worried expression on his face. The Persian soldiers have a stern look.
Modern history.
The mosaic was found again on October 24, 1831 in Pompeii. It was moved to Naples in September 1843. It is in the Museo Archeologico Nazionale.
Modern copy.
In 2003 the "International Center for the Study and Teaching of Mosaic" (CISIM) in Ravenna, Italy, wanted to make a copy of the mosaic. The mosaic master Severo Bignami and his eight-person team took a large photograph of the mosaic. It took them 22 months to make a copy of the mosaic. The copy was put in the House of the Faun in 2005.