Geologist says she knows the Mona Lisa's setting. But not everyone is convinced

While many art historians have focused on the woman in Leonardo da Vinci's Mona Lisa, Ann Pizzorusso has a different obsession — the mountain ridges in the background.

While many art historians have focused on the woman in Leonardo da Vinci's Mona Lisa, Ann Pizzorusso has a different obsession — the mountain ridges in the background.

While many art historians have focused on the woman in Leonardo da Vinci's Mona Lisa, Ann Pizzorusso has a different obsession — the mountain ridges in the background.

Radio/As It Happens