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On a 4.5x9 "looper", I'd have to say the, bent, offset, oval-ish type thing that is my elevated line. It has top tier "layer cake effect"
That's changing as I build "up".
I have changed lately to suit my view from the control seat at the rear side.
New on the horizon from my view...
In the far right corner, it is a hillside mine, level with the elevated line.
The far left corner now has a 175 gantry/pad, also elevated.
The viewers gaze should vary by position.
A flag man shack, 175 pad/gantry, and a crossing grade is first through the door
Heads up to look down into the "spaghetti bowls" made by the elevation. Its alternative is getting low, tricking them into a ground level inspection of the "town" area.
Right-A street scene, diner, liquid/gas tanks, & culvert industry, gaze lifting to a mini switch tower up high.
Left- "Hill top to valley" view of the watering tower area below.
The elevation runs from the near corners towards and along the backside, opening a "valley" between the elevation's end loops.
The foreground centered has a little covered platform depot, the tracks, a clearing with a work yard for an AF talking station(city) bashed into a factory.
Made by simply ditching the ornate door section, and adding smoke stacks. (It already has green "chicken wire glass" like a factory does)
I know, I know... its lattice
But I like chicken better than salad
On the 30" circle layout, a globe is the center piece when the rocket runs. It used to hold the 175 pad/gantry as an alternate, Oh, and a tree for the holidays
The ceiling?
1st you see the luggage station in the corner with a grade behind it, leveling out just to the left of the station. That leads you into turning left, away from the door hinged on your right, and looking naturally to the window on the left, then up again to a minor industrial wall and a bridge to the left corner and around its curve.
Up the incline, noting the lower level loop, yard lights, and 2cnd line below, all stretching to the next corner were the ground level drops quickly 2 inches to the final wall. And on the elevation, it levels out, crosses a bridge and turns to the last wall.
On that last wall, against the wall is a series of bridges for the elevation.
Centered at ground level. Deep red, brick makes up a 20"-ish long tunnel/engine house/shop on a pass trough track, located directly under the elevated line.
"Built in". It is part hillside, part structure.
It resembles a "Green Building" with a landscaped roof.
The only elevated earth that the upper level track touches, is that hilltop.
It has a little park, with short, stone walls. A break in the short wall a guardrail, with some trees & bushes framing a viewing bench, above another storage siding and the lower main.
It is also one abutment base for a girder/ trestle/ girder bridge to the left, just before the final descending corner.
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Sharing this final focal view with the daytime dominant "brick hill", with the bridge lights on, it becomes dominant at night. The red loses its color pop to the shadows.
In the dark, lights still lead your eyes counterclockwise from the station.
Overgrowth, moss, and greenery in general, is only seen here on the hill.