What is the main purpose of a dive light in a cavern?

A dive light is essential in cavern diving primarily to illuminate dark areas for navigation. Caves and caverns often have sections that are not permeated by natural light, making it challenging for divers to see their surroundings. The primary function of the dive light is to allow divers to safely navigate these environments by revealing potential hazards, entrances, or exits that might not be visible otherwise.

Good visibility is crucial not only for navigation but also for ensuring diver safety, as obscured obstacles can pose a risk. While a dive light may serve other functions, such as communication or signaling for help, those are secondary. The ability to see where you are going and to evaluate the cave structure is paramount, making illumination the main purpose of the light in caverns. Thus, its role in enhancing visibility is critical for both safety and effective navigation.