European Carnage Tour Traveling was a European tour headlined by American thrash metal bands Slayer and Megadeth .

Slayer and Megadeth had previously toured Traveling together in North America on American Carnage Tour in 2010 , with Testament and Anthrax as the supporting Supporting acts .

In Saint Petersburg on March 16 , 2011 , Megadeth performance was cut short Removing due Causation to Dave Mustaine 's illness .

Throughout its existence Presence , the festival Social_event featured iconic rock acts Action such as Megadeth , Machine Head , Iron Maiden , Biffy Clyro , and Metallica .