Ok i was digging in the underground and I found an odd keystone...So i went to solaceon and looked at the crumbling tower to the south and coicidentally it turned into the hollow tower...what is the hollow tower, what do I do next??

go underground and talk to 32 REAL people; or one person 32 times while leaving and reentering your base. then go to the tower again and battle spiritomb!
That's about it...

yeah, thekiller's got it pretty much right there.

also, note that you can do this every time you get a Odd Keystone

ok cool cuz ive got a second one.....also can i talk to the vendors 32 times??

The hikers/vendors do not raise your Spiritomb count.

thanks for reading!

so I can talk to the same person 32 times?

Yes, but you have to enter/leave your Secret Base or the Underground after each time.

So many topics like this :roll:

Next time use the official question thread (it's the one with caps saying POST ALL QUESTIONS HERE!! :roll: )

You have to talk to 32 real people in the underground.

Talking twice in a row doesn't count.

Leaving the underground (or editing your secret base) and re-entering, or just a totally different session DOES count.

Then look at the hollow tower again.

Woo... a spiritomb...