Related Clues:
- Animated movie of 2002
- Pleistocene Epoch, e.g.
- Very cold epoch
- When glaciers covered a large part of the earth's surface
- Epoch of glaciers
- Earth's period of glaciers - brrr
- Very cold era of earth's evolution
- Earth's period of glaciers
- 'When glaciers covered the earth (3,3)'
- Hard times then
- Sounds as if I have a hard time with the wise man
- 10 across then were hard
- One of those hard times
- One of those hard times that are not so hot
- When there are hard, but not 15 across, times