[SunkenCiv]

• Unlocking a Dilemma: Long-Term Management Issues at Sa Pala Larga, Sardinia [pdf]
• The sealed wonders of Sardinia [April 2010]
• Sardinian scientists believe they've traced the roots of
  the 'death-defying' sardonic grin to a plant
  commonly found on the Italian island [2009]

[dr_who]

I wouldn’t worry about it too much, seeing as how they’re already dead.