Dead Sun - Interiors - Advena made buildings

The first picture illustrates the interior of an advena-made building: a hidden base at the Midnight-region. These buildings were made fast, from cheap materials, but still serves as a strong hideout. Inside there is darkness, as humans who enters inside doesn't know how to turn the lights on in the alien building.
The second image is the inside of an enormous advena-made space station, specifically its dark and narrow corridors. But even though these corridors are narrow, they are also tall, since the advenas that lurks inside are also very tall creatures, and this is their own playfield.