Hivory Towers' Last Pagie? (Solved)

[Altair1293]

So I've been looking at a guide, and I'm only missing one item in the game, a pagie for Hivory Towers.
I want to have the game completed 100% before fighting the final boss. So, without spoilers, do you get a pagie for beating the boss? or right before the boss?
Any ideas as to which one I'd be missing?

[ECWeideman]

You can get all 20 for the Hivory Tower portion before that. I think I may know what one you may be missing:
The one in the wall of the canyon between worlds four and five. (the one with the green river) There is a small pipe high up in the wall you can enter, with a bunch of butterflies in front of it.

EDIT: This one took me forever to find

[Adameh]

Originally posted by ECWeideman:

You can get all 20 for the Hivory Tower portion before that. I think I may know what one you may be missing:
The one in the wall of the canyon between worlds four and five. (the one with the green river) There is a small pipe high up in the wall you can enter, with a bunch of butterflies in front of it.

EDIT: This one took me forever to find

You're literally a lifesaver