In the underworld

Yes, but this is just the figure of speech, we all use another word for it - Metro.
The course of the day took me to the metro. And to Mayakovsky station - by far my favourite station in Moscow metro and I again reminded myself that I must come here with a proper camera and lenses that would allow capturing the space, the architecture aextrasnd the decor of this fantastic station.
Promise I'll do the proper photo, meantime - blip on the run of the main platform and one of the lights in extra.