ROME (AFP) - Archaeologists have unearthed a 2,000-year-old mosaic in Rome depicting the Greek god Apollo surrounded by his muses in a cellar once used as a park tool shed near the Colosseum, officials said on Friday. "This is a very important discovery. The mosaic is in perfect condition and it can be dated exactly to between 64 and 109 AD," Umberto Broccoli, head of the culture department, told reporters. The parts of the mosaic uncovered so far are made with various shades of bronze-coloured tesserae and show columns, Apollo and one of the muses.