Section 12 - Tunnel 1 - Part 2

In the last blog (Section 12 - Tunnel 1 - Part 1) I identified the layout design elements of the Tunnel 1 Section and laid out the roadway lines. 

In this blog I am identifying the scenery construction concept and laying out the landforms.

Scenery Design Considerations

1. There are 2 backdrops 22 inches in height. They will be simple backdrops - a clear blue sky suggesting a sunny day. 

2. The terrain at the North Portal will be consistant with the Polson Canyon ridge line.

3. The terrain through which the tunnel is driven is basalt rock. No additional engineering is required within the tunnel area.

The terrain at South Portal will be a basalt cliff face with a concrete portal.

Landforms  

Ridge. Here is the generic photograph of the southern part of Polson Canyon as it approaches the the North Portal of Tunnel 1.  

On this section, I continued the construction of the Polson Canyon ridgeline with the 2 inch styrofoam.

Rock Faces. Here is the generic rock face along the main line as it approaches

Embankment. The embankment follows the general construction of the Polson Canyon section.

Once the basic landform is completed, it will be covered with Sculptamold on the flats and hydrocal plaster on the slopes.

Ground Cover

1.Areas of undulation will be covered with sculptamold   

2 Far ground cover

3 Near ground cover

Vegetation

 Far landform Sparce tree line with some indication of previous logging activities 

Near landform - ground cover, shrubs, small trees