Cathedral Hall, North Section, Cave of the Mounds, Blue Mounds, WI [Postcard]
Crystal Chandeliers Above the Lake Bridge, Cave of the Mounds at Blue Mounds, WI [Postcard]
Enchanted Mountain, Cave of the Mounds, WI [Postcard]
Gem Room, Cave of the Mounds, Blue Mounds, WI [Postcard]
Gem Room, Cave of the Mounds, WI [Postcard]
Massive Stalagmites, Cave of the Mounds, WI [Postcard]
Rare Ribbons in Stone with Black and White Stripes Showing Twin Black Knights on Ledge at Left, Cave of the Mounds, Blue Mounds, WI [Postcard]
Stalactites and Cave Onyx Terraces on the Enchanted Mountain in Cave of the Mounds at Blue Mound, WI [Postcard]
Stalactites and Cave Onyx Terraces on the Enchanted Mountain in Cave of the Mounds at Blue Mounds, WI [Postcard]
Stalactites on the Ceiling and Dome-Shaped Stalagmites on the Floor of the Chapel, Cave of the Mounds, Blue Mounds, WI [Postcard]
Stalagmite Statuary, South Cave, Cave of the Mounds, Blue Mounds, WI [Postcard]
The Hall of Statuary in the South Section at Cave of the Mounds, Blue Mounds, WI [Postcard]
The Hall of Statues, Cave of the Mounds, WI [Postcard]
The Narrows, Cave of the Mounds, Blue Mounds, WI [Postcard]
