In Super Mario RPG, the Pipe Vault exists as a nice 2D reference to Mario's roots. The area is one block wide to keep the player moving straight on a single plane. Alongside the hidden treasure that lies within, players will also come across a Frog Coin sitting in a tight corridor with no clear solution presented to grab it.

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Where is the Pipe Vault Frog Coin?

Super Mario RPG Pipe Vault

After entering the pipe on the surface and descending into Super Mario RPG's Pipe Vault, players can find the troublesome Frog Coin by proceeding across the pits of lava and into the green pipe at the end. Players should continue through the next area, up the stairs past the Thwomp, and into the far green pipe.

Super Mario RPG Pipe Vault Entrance to Frog Coin Room

On the other side, players will find an area filled with several green pipes and Piranha Plants. To get to the room with the Frog Coin, players should enter the next green pipe in front of them, or the second overall from the left.

Super Mario RPG Pipe Vault Frog Coin

The Frog Coin sits at the end of a corridor in a space too small for Mario to walk under.

How to Reach the Pipe Vault Frog Coin

Super Mario RPG Pipe Vault Frog Coin

The method for collecting the Frog Coin is far from an obvious solution. Players must run directly toward the coin and quickly tilt the control stick downward just before hitting the gap. Given the isometric layout of the game, players should begin with the control stick moving up and to the right (toward the Frog Coin), then down and to the right.

If done correctly, Mario will fall and slide underneath the gap as shown in the video above. The movement is similar to how Mario is able to run and quickly duck to slide underneath small gaps in many of his 2D outings.

That's all players need to do in order to get the Pipe Vault Frog Coin in Super Mario RPG. The process isn't all that complicated, as long as players follow the steps carefully.