Update on my layout

Here's a picture of another section of the layout I've recently been working on. It's the east entrance to Cordelia tunnel on my layout. Not much of the scenery is yet 'scenicked' but it has the raw forms in place. Card board strips , polystyrene foam and masking tape make the rough contours of the terain. Once this is completed, I'll paint it with an earth tone latex paint. Over this a layer of a terrain mix paste is applied (the paint serves to make the paste stick to the masking tape better). This mix is made up of portland cement, vermiculite, and crack filling plaster, mixed with water. I got this technique from Joe Fugate's scenery dvd series (10 mile Creek).
On the picture my (new) SP 7305 leads NE 1623 with a short local into the tunnel.  (the absence of a tunnel  portal still very obvious).