A scene in the painting style of Jan Matejko, depicting a huge underground cave

A scene in the painting style of Jan Matejko, depicting a huge underground cave and the mysterious architecture of an alien civilization inside. Futuristic objects made of steel and glass contrast with the raw walls of the cave. Along the main avenue there are a number of statues of mysterious figures. The whole thing is in dark tones, illuminated with mysterious light creating interesting chiaroscuro and reflections of smooth and shiny elements of alien architectural objects.