Tunnel

I'm getting through the chicken wire and plaster!  The tunnel is now completed and installed.  The entrance on the far side is just carved into the rock...

...and after plastering, painting and grassing looks like this...

The little holes on the right of the entrance have been drilled to accept a barrier.

On the (more visible) exit, I wanted a proper tunnel front with granite effect, so a few pieces of MDF and some railway modellers paper gives this:

With plaster, paint and grass...

And with the lights on in the tunnel...

In this photo, you can see how far the border strip goes.  Standing up, you won't see it.  But it highlights the latest development - home-made borders.  I've used 0.5mm plasticard cut to the shape of the track and affixed self-adhesive red stickers cut to right size.

A bit fiddly but much cheaper than buying Scalextric borders for the entire track.  It's the only solution for going under the tunnel but I've been using it along the straights as well.