Long-Term Glacial Period

This page is the CodyCross answer for the clue below from The 70's, Group 334, Puzzle 5 (The Shining).

Question is: Long-Term Glacial Period

and the answer is: ICEAGE

Word Meaning:

ICE AGE — (sciences) A period of long-term reduction in the temperature of Earth's surface and atmosphere, resulting in the presence of major polar ice sheets that reach the ocean and calve icebergs.

Definitions from Wiktionary.