The photo is taken under natural light, the "land" is actually the first test board, while the Noch retaining wall was placed in the back (right now, even it's not visible in the photo, it's already curved, in preparation to setting it up on its final spot on the big board). A small patch of miniNatur summer ivy was used (936-22S), while the dining car is an ancient PIKO WR ge, built in the 80s.
For that detailed close-up look, just click.