Mastodon and Opeth will be embarking on a co-headline tour this spring.

The 30-date trek, which kicks off April 4 in Portland, Maine and runs through May 12 in Atlanta, Ga., will also feature Swedish occult-rockers Ghost opening all of the dates.

About the tour, Opeth frontman Mikael Åkerfeldt, in his trademark deadpan wit, stated, "We're touring North America together with Mastodon soon. Nice! One of the very few metal bands of today that I genuinely like. Good people too! Ghost are coming with us as well, and they are one of the hottest new bands to come out of Sweden in recent years, and I dig them too. I sound like an old fart, don't I? Well, I am."

Dates for the tour are as follows. Pre-sale ticketing begins on Feb. 1, with public on sales to follow on Feb. 3.

April 4 – State Theater – Portland, ME

April 5 – Orpheum Theater – Boston, MA *

April 6 – Metropolis – Montreal, QC *

April 7 – Sony Centre – Toronto, ON *

April 9 – Electric Factory - Philadelphia, PA

April 10 – The Dome – Wallingford, CT

April 11 – Roseland – New York, NY

April 13 – Riviera Theater – Chicago

April 14 – Intersection – Grand Rapids, MI

April 15 – Stage AE – Pittsburgh, PA

April 16 – TN Theater – Knoxville, TN *

April 18 – Diamond Ballroom - Oklahoma City, OK

April 19 –Palladium – Dallas, TX *

April 20 – Backstage Live – San Antonio, TX *

April 21 – Concrete Street – Corpus Christi, TX *

April 23 – Fillmore – Denver, CO *

April 25 – House of Blues – Las Vegas, NV

April 26 – Gibson – Hollywood, CA *

April 27 – Fox Theatre – Oakland, CA *

April 28 – Grand Sierra Resort – Reno, NV

April 30 – Paramount Theater – Seattle, WA *

May 1 – Orpheum – Vancouver, BC *

May 3 – Edmonton Events Centre – Edmonton,AB *

May 4 – MacEwan Hall – Calgary, AB

May 5 – The Odeon – Saskatoon, SK

May 6 – Burton Cummings – Winnipeg, MB *

May 9 – The Fillmore – Washington, DC *

May 10 – The Fillmore – Charlotte, NC

May 11 – House of Blues – Myrtle Beach, SC *

May 12 – Masquerade Music Park – Atlanta, GA

*Denotes Opeth close the show

Watch 'An Interview With Mastodon's Brann Dailor' Video