Related Clues:
- Observe wise man, we hear, in ancient period
- One mouse finally put in enclosure when it gets very cold
- Reportedly makes a release at university during icy spell
- Impregnable cover protecting church silver for a period
- One cold bird leaving lake behind when temperature gets very low
- Pleistocene era
- 'The --', a novel by Margaret Drabble
- Big chill?
- One church is seventy years old when hell freezes over we presume
- Film franchise with a mammoth named Manny
- 2002 film with a mammoth co-star
- Long cold period
- Glaciated period
- Glacial historic period
- First appearance of Sid the sloth