Only after half an hour, the entire underground space had changed greatly.
Castle of Black Iron sucked in most of the magma, leaving 20-m high magma residue on the ground. Additionally, all the walls were radiating a dull, red glow in a high temperature like a brick kiln which had just been opened after finishing a round of production of bricks.
Half an hour ago, it was indeed like a closed kiln.
The closed kiln was used to make porcelain or bricks. 15 knights were trapped in here.
Few bloody magmas were flowing off the rock walls on both sides from the broken dome. The huge magma lake above the dome led to a geographical position of magma. By now, three-quarters of the magma had flown out of the magma lake. However, the magma was still gurgling like spring water. It might take the geographical position a few weeks to completely fill the palace downside there and refill the magma lake.