And there was, and it was magnificent. A cerulean aura of rippling illumination trickled across revealed surfaces to highlight an arrow-straight passageway. Like a transparent tube surrounded by a Caribbean Sea, the tunnel stretched into the distance.
The three moved as in a dream, or nightmare, Belvedere for one was unsure which. Ahead was only darkness, in every other direction just coruscating blue.
“Bioluminescence,” Headlock breathed as though in explanation.
“Bio-what?”
“Luminescence, Ignatius. This tube is surrounded by water. Swimming between a layer of seawater and Thames freshwater, or what might be called freshwater, live billions of tiny shrimp. They glow. We have light.”
“It is fantastical!”
“It is one of many such routes carved out in disguise beneath the city.”
“Still
