Related Clues:

• Cone material
• Stromboli outpour
• Output of Mount Etna
• Obsidian, once
• Bygone telephone device
• Maker of Purex and Armour Hash
• Old piano key material
• Etna outpouring
• Kilauea flow
• Slow roller
• Magma exposed
• Obsolescent phone feature
• Molten spew
• Molten matter
• Obsolescent phone part