Chapter 148: Dragon Rune Tunnel, Mine, and Connection

The tunnel was very long. There were golden broken rocks on the ground, and the surrounding rock walls were a mixture of red and black rocks. All of them had horizontal rock formation patterns, which were clearly washed out by water.

The Netherworld River flowed quietly by the side. The blue light was hazy, illuminating the horizontal rock formations. It seemed to be flowing, making the entire tunnel look alive.

There were no forks along the way, and it went straight ahead.

However, there were actually obvious traces of excavation on many rock walls. It seemed that the unknown ores just now had been excavated near this rock wall.

After walking for a while, Lin Yan suddenly saw that the rock wall on the left in front of him was filled with holes. Underneath it was actually a pile of grayish-white bone fragments.