After you reach the crater shortcut and make your way through, you enter the rift to reach the Stilled Eldin Volcano.

Explore the Stilled Eldin Volcano

Create a lava rock south of the other lava rock, then jump north onto the lava rock. From there, create a lava rock between you and the platform to the north. Jump onto the north platform. Use echoes to keep going north, then when there is a large lava lake to the north, go east onto the ledge.

Create a lava rock to the north, and jump north to the platform in the lava lake, but watch out for the Fire Octoroks in the lava. Ignore the treasure chest to the east for now, and go northwest, past a Fire Octorok, and jump onto the platform north of where the Fire Octorok was. Then jump east to the area where you saw the treasure chest. Open the chest to get 5 rocktatoes.

Use an echo to go back to the large lava lake. In the northwest part of the lava lake, defeat the Fire Octorok to the north, then put a lava rock onto a northwest lava spout. Jump northwest from there to the solid ground. There is a chest to the west that you can reach using echoes, such as by placing a water block on the solid ground, then creating connected water blocks to the island to the west. Open the chest to get 50 rupees. Then go back to where you were.

Create echoes, such as old beds, to go north and climb up the rock wall. Beware of the dark Mini-Moldorm and Torch Slug on the wall. Go east and check on the waypoint to add it to your map.

Climb back up the wall and go to the west side of this island. Jump down to the ledge to the northwest.

Go west to where there is an air vent, but beware of the dark Zirro that spits bombs. Create a flying monster echo and pick it up, then float up in the air vent and go north. Then get in the next air vent and go east. Climb up the rock walls. Use a flying monster echo to float up in this air vent, then fly east to the island in the lava, but don't get too close to the lava spouts. Then float until you're above the platform, and let go of your flying monster echo to fall down onto the solid ground.

Go east and enter the cave. You will arrive in Eldin Temple.