Changeovers
Changing direction on rope can mean switching from rappel to climbing or climbing to rappel. This is rarely necessary if everything goes as planned, but sometimes ropes are rigged short, a hazard is encountered, or maybe a critical piece of gear was left at the top or bottom of a pitch. Whatever the reason, safely performing a changeover is considered by many to be a fundamental vertical skill that should be mastered before taking vertical rope skills underground.
Caving Vlog #14 In vertical caving, change-overs are very commonly practiced, but very rarely needed; however, it's good to be proficient if you end up with a short rope, water hazard, or other problem that requires a change-over. This video demonstrates the basic technique. Caves are delicate and potentially dangerous places.