Fujichrome Sensia 100, OM-2S, 21mm lens, B-setting at f/3.5, 5 Press 25 flashbulbs (on rope), tripod.
"This represents an experimental exposure of a caver climbing out of the Rumble Room. To obtain this image, I left the shutter open and just let the caver climb and set off bulbs every 40 feet or so."