Fujichrome Sensia 100, OM-2S, 21mm lens, B-setting at f/3.5, 2 Meggaflash PF300 flashbulbs, tripod.
"This image is from our first photo expedition. The chamber simply boggles the mind. Its exact dimensions are unknown to me, but suffice to say one never really gets to see it! It is reportedly over four acres in area. The rope drop into the chamber is over 200 feet, and that's just to the apex of the talus pile. This image ws taken approximately 75 feet lower than the talus peak. The nearly perfectly circular walls and ceiling are a masterpiece of geologic handiwork. Note the faint whisp of a waterfall right of center."