Related Clues:

• Important historical period
• Pleistocene glacial period
• Animated film with Manny the mammoth
• Eocene, e.g.
• More than just a cold snap
• Historical stretch
• It happened back in cold-en days
• Oligocene, for one
• Historic cold period
• Period frozen in time?
• 2002 film about Manfred and Sid
• Long geologic time period
• More than a cold snap
• Super-cool time?
• Animated movie of 2002