The Terror Valley Effect

The underground cave was neither narrow nor spacious. The walls were covered with densely packed footprints, and the extremely dark footprints were spreading elsewhere. Black footprints began to appear on the ceiling and floor of the cave. Disorderly and swift footsteps echoed continuously.

However, Fang Yuan and Ji Yueyi didn't see the owner of the footprints. "This thing seems to have no body, only footprints?" Fang Yuan frowned as he looked at the black footprints that filled the surroundings in an instant. The next moment, the black footprints spread to Fang Yuan and Ji Yueyi's front. Without hesitation, Fang Yuan raised his foot and stepped hard on the black footprints.