Related Clues:

• What can cool into basalt
• "Floor Is ___" (Netflix show)
• The stuff of volcanoes
• Hot stuff in an eruption
• 'Floor Is ___'
• "The floor is ___!"
• What lava is before an eruption
• It's hot stuff!
• The floor in a kids’ agility game, supposedly
• Cinder cone, originally
• Basalt, originally
• Fagradalsfjall flow
• __ Beds National Monument
• Hot stuff from graduates, with good intervention
• Pre-eruption lava