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What does "way" mean in the text below?

Here's an extract from The catcher in the rye by J. D. Salinger;

I remember around three o'clock that afternoon I was standing
way the hell up on top of Thomsen Hill, right next to this crazy cannon that
was in the Revolutionary War and all. You could see the whole field from
there, and you could see the two teams bashing each other all over the
place.