Related Clues:

• Become active, as a volcano
• Gush in a bad way
• Belch forth
• Let fly, as lava
• Flow with force
• Blow out, as volcano
• Emulate 59-Across
• Blow like Mauna Loa
• Eject, volcano-style
• Break out, as violence
• What a geyser does
• Go nuts, as a crowd
• Expel forcibly
• Spurt out
• Blow up like volcano