Related Clues:

• I see in a text a step back from global warming interest
• The opposite of a sun bonnet?
• It might help to keep a cool head?
• One's cold to walk over
• Dessert gets better, when on mountain peak
• Glacial mass covering polar region
• Permanent covering of mountain or Pole
• Permanent polar covering
• Feature of polar regions
• Frozen top of mountain etc
• Permanently frozen polar mass
• Frozen polar area
• Covering over a polar region
• Frozen topping
• Permanently frozen covering of land