Florence: Archaeologists digging for the remains of a 16th-century woman believed to be the model for Leonardo da Vinci's Mona Lisa have found a crypt and a stairway to a second tomb inside a medieval convent in Florence.
'What we found confirms the precise corroboration between the historical documents and the preliminary results that emerged from geo-radar soundings,' said Stefania Romano, spokeswoman for the group behind the excavation at the convent of Saint Orsula.
The team of historians plans to use geo-radar equipment to locate the skull of Lisa Gherardini Del Giocondo, who died in Florence in 1542 and is believed to have modelled for Leonardo's celebrated portrait now hanging in the Louvre.
Once they locate the skull, the team will try and recreate a likeness of what the woman would have looked like, compare her to Leonardo's world-famous portrait and unlock the centuries-old mystery surrounding Mona Lisa's identity.
The historians will compare the DNA with that of two of her children buried in Florence's Santissima Annunziata church to prove her identity.
Many experts, however, say Leonardo's painting may be a composite of many faces.
The Mona Lisa has exceptionally large hands and some art historians believe the sitter was a man - Gian Giacomo Caprotti, apprentice to and alleged lover of the maestro.
Many have wondered if a secret lies behind the model's famously cryptic smile.
But most modern scholars now agree the Mona Lisa sitter was Del Giocondo, the wife of a rich Florentine silk merchant, who according to Leonardo expert Giuseppe Pallanti became a nun after her husband's death and died in the convent July 15, 1542, aged 63.
The dig began in the hallways of the convent and the team's radar showed there could be burials there dating back to Gherardini's time as little as two metres below the surface.
'In the next few days, we will enter the most critical phase of the research, when the tombs are opened and we find if there are human remains inside or not,' said Romano.
If found, Mona Lisa's body will be examined by archaeologists, art historians, anatomic pathologists, anthropologists and biologists, and the tomb and investigation finding with go on public display, according to Romano.
The excavation has ,however, sparked a controversy with a local princess who claims to be related to Del Giocondo calling it 'sacrilegious' and saying the remains should be left in peace.