C687 Demented

The originally calm sand dune began to tremble, and the sand that covered its surface immediately began to slide down like quicksand.

Seeing this situation, Ling'er hurriedly stopped and stared at the sand dune with a puzzled expression.

At this time, Zhang Hao also turned his head around to look. He saw that the surface of the sand dune had already revealed the gray rock layers of the ant nest