Archaeologists unearthing a huge ancient burial site at Amphipolis in northern Greece have uncovered a large floor mosaic. The mosaic - 3m (10ft) wide and 4.5m (15ft) long - depicts a man with a laurel wreath driving a chariot drawn by horses and led by the god Hermes.

The burial site is said to be the largest ever found in Greece. It dates from the late 4th Century BC, spurring speculation that it is linked to Alexander the Great of Macedon.