“Blue,” I said steadily, a bad feeling filling my stomach. “Close the passage.” She nodded and went back to the rock. There was no reverse switch, so she did what seemed most natural and stomped on it again. Her instinct was correct. The button rose up to its starting position and the massive stone slid into place, closing off the staircase. I looked around the canyon warily. “All these rocks … How many of them are just hidden passageways?” SJ asked nervously. “And what exactly lives down there?” Jason added. The latter of these two questions was soon answered. Suddenly, the other stone I’d seen footsteps leading up to began to move. “Everybody hide,” Daniel snapped. We sought cover behind two stones—SJ, Daniel, and I hid behind the one concealing the passage we’d previously opened

