Related Clues:

• It's hot stuff
• Kilauea output
• Waterspout trajectory
• Hawaiian bubbly?
• Rocket's trajectory
• Rock on the roll?
• Rainbow's shape
• Apparent path of the sun
• Path of a football pass
• Pendulum's path
• Holder of a number of degrees
• Etna effluent
• Compass-drawn line
• Obsidian, before cooling
• Volcanic rock