..
The corridor was very long, but under the attraction of the song, they gradually reached the end.
In the darkness ahead, a dark red halo lit up. Matthew lit a ball of magic fire, illuminating the outline of that corner.
He saw a door that was as wide as the main door.
However, the door itself had been completely removed by some kind of force. The top of the door frame was fused with a rock-like material. There was a hall that was symmetrical to the front door by the door, but there was nothing in the hall.
The red light and singing came from outside the door.
The two of them slowly approached the door and looked outside.
It was an extremely spacious underground space.
The dark red light shone from below, reflecting layers of halos on the rocks about 20 to 30 meters away from the horizon.
There was a cliff not far from the door.
There was boiling lava seven to eight meters below the cliff.