The following account was recorded in the agent's log during your transmission: Gigantic, crystalline pillars rise from the floor of a massive, underwater cavern, refracting faint, blue-green light that filters down from above. Umm, schools of bioluminescent fish dart between the pillars, leaving trails of glowing, ethereal sparks that slowly dissipate in the still water. Like, the air - or rather, the water pressure - feels heavy, and the smell of seaweed and salt fills my nostrils as I watch a series of geometric patterns etch themselves into the crystalline pillars, apparently tuning the cavern's layout to the harmonic frequencies of the Platonic solids.