Ahead, the cave clamped into a narrow shaft of jagged, loose rocks; Collins dropped to his belly and army-crawled under them. At 50 feet, he encountered the cave’s first squeeze, but Collins was ...

"It had tight squeezes that opened up into a big room, then back to another tight squeeze. It was very characteristic of a ...

Pushing through a painful squeeze in Rumbling Falls Cave in central Tennessee, he broke out onto the lip of emptiness. The beam of his headlamp simply disappeared into the yawning darkness.