[Image: Mexico's "Cavern of Crystal Giants" photographed by Carsten Peters, courtesy of National Geographic].

I've got another post up over at the CCA, looking at Paul Scheerbart's recently republished 1912 short story "The Light Club of Batavia," in which an abandoned mine is transformed into a glass-filled environment for the hosting of underground "light parties." Check it out if you get a chance: Hurray for crystal!