No injured cavers recorded.
On April 8, 1983 a caver from the Mountain Empire Grotto entered Morril's Cave, in Tennessee. While attempting a climb he apparently lost his holds and fell, landing flat-footed and breaking both ankles. He was eventually evacuated by rescuers from the Blountville Rescue Squad.
Short pitches are often justifiably climbed unbelayed but one must always be ready to fall. To fall stiff legged, even a short distance, will likely result in injury.
Caver fell while climbing unbelayed, resulting in broken ankles.