Earth's climate alternates between ice ages and greenhouse periods, during which there are no glaciers on the planet. Earth is currently in the Quaternary glaciation, known in popular terminology as the Ice Age.

Individual pulses of cold climate within an ice age are termed "glacial periods" (or, alternatively, "glacials", "glaciations", "glacial stages", "stadials", "stades", or colloquially, "ice ages"), and intermittent warm periods within an ice age are called "interglacials" or "interstadials", with both climatic pulses part of the Quaternary or other periods in Earth's history

How old are the emerald tablets?

Their antiquity is stupendous, dating back some 36,000 years B.C.

Well would you look at all of that lost history! 30,000 years worth…destroyed, lost/undiscovered,error/miscalculation in dating time period,or it is purposely being suppressed