Forum:2nd Alabasta pone glyph?

I'm relatively new to OP so forgive me if I'm wrong, butI just finished the Alabasta arc of the anime. Fairly early in their journey in the actual kingdom Luffy becomes separated from the crew. Zoro and Chopper go looking for him and after finding him begin trying to rejoin their crew mates. Luffy becomes over exited when a shade rock is spotted, and gum-gum-rockets toward the shade where they fall into an underground chamber. In the chamber is what appears to be a poneglyph. Is this in fact the first appearance of a poneglyph? The first mention by name is later in the arc by Crocodile prior to his 3rd fight with Luffy.