Aria and Samuel collapsed onto the soft couch, exhausted from their long three hours search for the soil. They had searched every inch of the room, the tunnel, and even the hidden compartments, but to no avail.
"I don't get it," Aria said wiping the sweats out from her forehead. "We've looked everywhere. Where could the soil be?"
"Maybe it's not here," Ryan suggested but Samuel shook his head vigorously. "No, it has to be here. The person who built this place thought of everything else."
They had even discovered the kitchen that was hidden behind the wall at the opposite side of the sitting room. The modern kitchen had given them hope, but the absence of soil was a glaring oversight.
They had closed the opened wall to the tunnel, during their search, the wall slide shut, sealing the still lit on tunnel. They didn't dare turn it off, as it was connected to a single switch that powered the entire facility, so they left the tunnel with its lights on.