Fujichrome 100, OM-2S, 24mm lens, bulb setting at f/2.8, 2 Press 25B flashbulbs, tripod, ES-10.
"McCracken Spring Cave, located deep within Fort Knox Military Reserve property, is one of the most fantastic caves in Kentucky. Virtually unknown to the caving community, it contains several complete siphons and low, water filled passages. The rewards are stunning."