what floor is the eos tower mini-dungeon?

the title says it all, I realy needa know.(gah those drumming bunny quests)

I'm not sure about this, but i think near floor 71.

Not sure the exact floor but its the first big drop fall that you encounter

thanks spadow, its on the 71-90 floor. O just needed a place to seach

and it has no name and no minimap :O