Related Clues:

• Igneous rock sources
• Outputs from El Chichón
• Hot rocks
• They go with the flow
• They're hot stuff
• Volcanic rocks
• Molten substances
• Molten materials
• Volcanic flowers
• Exudations from eruptions
• Flowing rocks
• Volcanic outputs
• Volcanic flowers?
• Volcanologists study them
• Volcanic outflows