Tying in the Portal and Tunnel Walls

Well, we completed the plaster and basic ground cover but now have to bring the ground to the portal. I used so Hock stone wall material to make the tunnel liner. I weathered it to match somewhat the color of the portal. It is then glued to a cardboard backer and placed along the tracks. I sealed the bottom and then brought the ballast out to cover the seam. I assume that once the area is covered, you will not see the end of the wall so easily. I did not want to go too far in case of unforeseen events. 

Here is a view from overhead. All this will be covered with plaster. So, I need to protect the track during construction. 

I built a webbing over the track and holding the upper portion of the liner walls in place. 

I glued paper to that webbing. I stuffed the tunnel with paper towels to be sure no plaster or water got to the track. That was successful.

Now I added webbing and paper to make the final land form transitioning from the upper track to the lower track. Tape has been added to protect the color of the portal and walls.

The paper has been brought down the side to the face of the tunnel portal. 

Plaster cloth has now been added. It was careful work to tie to the face of the portal and wind wall.

Completed view and Structolite has been added to the plaster base. 

Ground paint has been added to complete the basic construction.