Mastodon have announced that they will be supporting Metallica on their March Mexican/South American run. Dates include:

March 01st Guadalajara, MEX – Estadio Tres de Marzo
March 03rd Monterrey, MEX – Estadio Universitario
March 05th Guatemala City, GTM – Estadio Mateo Flores
March 07th San Jose, CR – Saprissa Stadium
March 08th Panama City, PAN – Plaza Figali
March 10th Bogota, COL – Park Simon Bolivar
March 12th Caracas, VEN – La Rinconada
March 14th San Juan, PR – Coliseo de Puerto Rico