The M3 Rock Festival is an annual music event that celebrates the best of 1980s glam metal and hard rock. Established in 2009, the festival is traditionally held at the Merriweather Post Pavilion in Columbia, Maryland. Featuring iconic bands and artists from the '80s rock scene, the festival attracts fans from all over the world who come to relive the era's electric atmosphere. Known for its vibrant performances and nostalgic vibe, the M3 Rock Festival has become a staple for enthusiasts of classic rock music.