C137 A Tomb in the Sea?

The passage was long, but it was full of twists and turns. The road was narrow on both sides. He could only allow one person to pass by.

The entrance was originally a staircase leading downwards. As a result, the further they went down, the lower the ground became.

"All of you be careful, I wonder what dangers there will be inside." I walked at the forefront of the warning.

"Bro