How do you get to the second locked door in the wall of fireplace in OoT?

In "The Legend of Zelda: Ocarina of Time," to access the second locked door in the wall of the fireplace, you need to obtain the Din's Fire spell. First, acquire the Fire Medallion and then use Din's Fire to light the torches in the room. This will unlock the door, allowing you to progress further in the game. Make sure you have sufficient magic to use the spell!