This photo shows a small section of the Cave of the Mounds called the Narrows. It’s not clear from the photo why this is so as only one side of this passage is shown here.
This photo nicely demonstrates the difficulty in identifying up and down in many cave photos. The area is lit from several sources to highlight different features of the cave floor, walls and ceiling. As a result, the picture can almost be displayed inverted from the correct orientation shown here, and be acceptable to the human eye. Only the presence of the small floor area makes it clear ‘which way is up.’
The description simply states: The Narrows, Cave of the Mounds, Blue Mounds, Wisconsin
This is part of a larger series of photos that date from the 1940s.