Deep drilling carried out near Naples to study volcano risk
6 August 2012 Last updated at 17:50 BST
Italian scientists are drilling 3.5km into the ground beneath the Phlegraen Fields near Naples to monitor a dormant underground volcano.
They are hoping to set up a system which could give an early warning of possible eruptions - but there are some who fear the drilling could itself trigger an eruption.
Marek Pruszewicz reports.