If the lower end of the steel pillar is firmly embedded in the bottom of the lake, Coo-ee-oh could utter a magic word that would make the pillar expand, and so lift the entire island to the level of the water." "I've found the end of the steel pillar.

It's just here," announced the Wizard, pointing to one side of the room where a great basin of polished steel seemed to have been set upon the floor.
They all gathered around, and Ozma said: "Yes, I am quite sure that is the upper end of the pillar that supports the island.

I noticed it when I first came here.

It has been hollowed out, you see, and something has been burned in the basin, for the fire has left its marks.

I wondered what was under the great basin and got several of the Skeezers to come up here and try to lift it for me.