Then turn around, go right and walk along the external wall. Open it to free another Goron and pick up another Small Key. When you are on the other side of the room, go to the left to find a door. Pick up the Small Key in the chest behind him, then turn around and go straight ahead (more or less). Go right and walk along the external wall to find a switch which frees another Goron. (You can also switch the diamond on from the platform right above it, then climb up the second wire fence.) Open the next door, you are in the 'rolling rocks room'. Turn right, quickly climb on the block, climb up the wire fence as well as the following one before the flames are turned back on. Next, climb on it, get close to the edge and shoot the Hookshot at the diamond.

Push the block to make it fall, then jump and pull it as much as you can. Unlock the next door, climb on the left wall and jump on the other side towards the diamond. Push the block to the middle of the room, then jump on it to go up one level. Slide on the plank, then climb up the wire fence to the right, get rid of the two bats and jump on the platform right below. Finally, turn around, go right and open the locked door. Blow up the wall, free and talk to the Goron then pick up another Small Key. Turn around and go to the opposite side (on the right from the entrance door). Open the door and free another Goron, speak with him to get his advices and pick up another Small Key from the chest. Here, use the bridge and the moving platforms to follow the small corridor on the left. Talk to him, pick up the Small Key in the chest at the back of the room, then come back to the previous room.

After talking with Darunia, jump from platform to platform to the left and step on the switch to free the Goron.

Fire temple zelda ocarina of time