With some 9 tunnel portals on Highworth I've started looking for prototype inspiration and working up to a bit of scratchbuilding.

The various ready-to-use offerings are ok and have worked so far, but there are a couple of "vacancies" for something better/a little bit different, see below.

The twin track portal that forms the entry/exit to Highworth station is the first one I want to tackle.

http://www.rmweb.co.uk/community/index.php/gallery/image/22472-picture-138jpg/

This particular portal is hard up against the backscene and will most likely need a retaining wall to help blend the 3-d landscape into the backscene.

The 2nd image shows that there will be a tall retaining wall on the left of the tunnel.

http://www.rmweb.co.uk/community/index.php/gallery/image/22473-picture-144jpg/

Bit of a plea here. If anyone can point me to some photos of interesting prototypes of tunnel portals I'd be really grateful.

Lastly, this image shows...

http://www.rmweb.co.uk/community/index.php/gallery/image/22474-picture-145jpg/

... what I'm trying to move away from. I created this as a temporary finish to a tunnel mouth using Slaters 7mm stone sheeting. There's nothing good about this and I'd like to improve the quality of the modelling. Again, if anyone can point me to some "vault" of photos that would contain some inspiration then I'd be really grateful.

Andy