The Download Festival has done it again, putting together one of the best music lineups in recent memory, especially if you’re a hard rock and metal fan. The 2013 event, which runs June 14-16 at Donington Park in the U.K., just increased the awesomeness of its already stellar lineup by adding Stone Sour and Mastodon.

For Stone Sour, this marks the second major festival of 2013 where Corey Taylor will get to pull double duty (the other is Ozzfest Japan), as his other band, Slipknot, have been confirmed as one of Download's headliners. Stone Sour have been building extra buzz from their 'House of Gold & Bones, Pt. 1' album and their European tour with Papa Roach. As an extra little gift for fans, by the time Stone Sour return to Download, 'House of Gold & Bones, Pt. 2' will be in stores.

The status of Mastodon by the time that Download comes around is a bit murkier. Brent Hinds recently revealed that while the band is enjoying supporting their 2011 album, 'The Hunter,' they actually have a good start making music for their next effort, possibly using some of early 2013 to lay down tracks. Depending on how they progress, the band will either still be promoting 'The Hunter' or potentially gearing up for a new release.

The three-day event will have Slipknot, Iron Maiden and Rammstein as the headlining bands for the individual days. Other acts set to play Download include Bullet for My Valentine, Queens of the Stone Age, 30 Seconds to Mars, Motorhead, the Gaslight Anthem, Alice in Chains, A Day to Remember, H.I.M., Volbeat and the reunited Coal Chamber. More bands are expected to be revealed in the weeks and months leading up to the festival.

For ticketing information on the 2013 Download Festival, please check here.