‘Never-before-seen’ footage shows attempts to rescue caver who died ‘worst death imaginable’

of its twisting tunnels and extremely confined spaces. But deep inside the cave system, John mistakenly entered an unmapped passage he believed was part of a familiar route.

It wasn’t.

The tunnel narrowed into a tiny opening measuring roughly 10 inches high and 18 inches wide. As John pushed forward headfirst, gravity pulled him deeper until he became continue reading …