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is the correct phrase

what lay ahead

or

what lies ahead ?
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Hi Anon

Both are correct, but they are different tenses:

what lay ahead => past simple form of the verb "to lie"

what lies ahead => present simple form of the verb "to lie"
Comments  
What lies ahead.
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 Yankee's reply was promoted to an answer.
well it depends on wether you are speaking in the past ( in which case it's lay ahead)

or the present ( in which case it's lies ahead).

Phil