Science Fantasy Experience: Black Light Tours

Imagine walking into a cave where the stalactites and stalagmites glow bright green, leading you through the darkness. While glowing cave formations may seem like something out of a Sci-Fi novel, Cave of the Mounds has brought fiction to reality. A special mixture of minerals causes our cave formations to glow under ultraviolet light. 

And not only that, they keep glowing even when you turn off the lights. By shining a black light on the rock, you charge the stone up like a battery, and that energy leaves it as a glow called phosphorescence. Because of this effect, guests can write their names and draw pictures on the formations and then watch them fade away as they continue down the path.