a cave diver explores a submerged cave system aware of the limited air supply and the dangers of getting lost in the darkness

cave diver explore submerge system aware limit air supply danger rescue subterranean creature submersion unknown underground equipment mysterious labyrinth mystical headlamp darkness scuba passage endeavor terrain device mission seeker challenge hide life diving discovery cavern sonar pressure navigation adventure spelunk water courageous clear aquatic underwater underworld condition seclude marine hazardous