Entrance to "Rocky Hall" 1866

"Entrance to 'Rocky Hall'" is a stereoscopic photograph created by Chas. Waldack in 1866, depicting the interior of Mammoth Cave. The image captures the intricate formations of stalactites and stalagmites that adorn the cave's natural wonders. The use of magnesium light, as indicated by the card's inscription, allowed for capturing the cavern's depths, showcasing the beauty of the subterranean environment. This stereograph, now housed at The Art Institute of Chicago, offers a glimpse into the early exploration and documentation of natural wonders through photography.