I am playing through Castlevania 64 again, and I've gotten to the Castle Center stage. Right near the beginning, if you turn down the first corridor, there is a green metal pillar on the left wall, and if you "examine" it, it says "A metal pillar. It seems to be hollow..."
Is this hinting at a secret of some sort, or is it just another one of the game's odd descriptions of things meant to boggle the mind?