Countless years (3)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">countless years</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for eon that I've seen before include "Vast age; eternity" , "Very long period (US and technical spelling)" , "Vast period" , "An immense time" , "Vast age (alt. sp.)" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">countless years</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for eons that I've seen before include "Vast ages" , "Very long periods (US)" , "Years and years" , "Nose (anag)" , "Divisions of archaeological time" .)