KELLY The thundering roar seemed endless. Kelly screamed, but she didn’t hear it. The hollow fall straight down made her stomach flip over. They were going to die; she knew it. They hit bottom suddenly. The jolt knocked the wind out of her. Her head snapped back on impact, smacking into rock. Her flashlight went out. Water and pieces of limestone showered over her like thick sleet, pricking the skin on her face. She rolled quickly to her belly and covered her head with both hands. She waited in terror for the rest of the ceiling to come crushing down. After what seemed like forever, the earth stood still. Rivulets of water, rock fragments, and loose powder drifted down, but eventually tapered off. The cave was quiet again. Kelly lay flat on her face, spotted with a dust-like residue. Sh

