This interesting scene was an attachment to an equally interesting module on the Cedar Creek Central Club's modular railroad. There is plenty of interesting detail above ground to study on this railroad, but this little vignette takes it a step farther.
The underground details are as interesting as those above ground on this module.
©2012 Ryan C Kunkle, licensed to About.com, Inc.
With the sides of the platform for the tank finished as if it were cut right out of the ground, no detail was missed in its decoration. Look closely and you'll find strata in the soil, pipes, even a buried fossil.
All of this detail really grabs your attention and it could make an interesting treatment for the fascia on your model railroad. It would go nicely with other "the end of the world" scenes I've found on other model railroads with figures looking over the edge into oblivion.
Of course even if you prefer a more conventional facade, the treatment of the soils and details here could be incorporated into an open pit on a construction site or similar scene on your layout.