There's no way to view this in-game as it has been deleted, and probably will not be added back into the game in the near future, as it has been removed from the game either partially or entirely.
The Blacksmith Store was an area that you can gain access to by entering the tunnel near the beach. The store seems to be closed, the store looks like it is owned by an unknown entity or nobody. You can return to the store via going to the door.
When touching the tunnel, a cutscene will play of the player that touched the tunnel entering it.
The Store's overall are made out of stone, it has orange glasses and a door made out of wood. Inside, we can see a table with the sign "Closed." Furthermore, there is an anvil with items like The Red Stone of Aja and a Vampire Mask (These items aren't interactable.) On the table's side, there is a thing that stores molten steel.
As of version 2.0.5i, it is no longer enterable through the tunnel.