Qeynos Hills
 

Back in the day, didnt the sky's use to turn red and skellys would spawn if u killed so many Qeynos Guards?? or did that come about after an expansion?

I believe you are thinking about the halloween event.

I don't know is this came later but it was most definitely not classic.

No it wasnt a hollowing event, it use to happen all the time when ppl were farming guards