If you want to enter the location of the Fire Dragon, you usually need to complete some designated tasks. According to the instructions of the task, you can enter the Fire Dragon location to challenge the Slag Pool. However, you must first receive the prerequisite tasks to obtain more rewards.
1. Go to the Searing Gorge and find "Hansel Heavy Fist" (38,28) in the Thorium Watchtower to get the quest.
2. After receiving the mission, find the Great Furnace (47,45) and teleport to the Slag Pool.
3. Go to a platform at the location of the slag pool and enter the slag pool.
4. Go straight and then turn right, you can find the Fire Dragon to challenge.
5. According to the mission requirements, kill 20 fire-smoking dragons, and then return to the mission release point to deliver them to complete.
