Hello Bartek,
in ITALY there are two possible alternatives for that, one is the Vesuvio volcano.
It is located over Naples, so depending on your shooting requirements a very interesting possibilitiy also considering logistic, main crew and equipment are 200 km away in rome, or 2 hours drive, while part of the crew can be also found in naples itself.
Vesuvio volcano is unactive since 1944
the second one is the Etna volcano which is over catania in sicily, logistically speaking it is an interesting choice too, but consider that main crews and camera have to come from mainland via ferry boat.
It is still quite an active volcano, last eruption was this year.
let me know if you need more info or some ref pictures of those, i am at your disposal.
best regards
Claudio Pintus
mob + 39 335 352719
http://www.lisola.net
claudio@lisola.net
skype cpintus
Bartek Morski 
