I am at the point in my HO layout where I am starting to think about building some landscape. I would like to have a hill or mountain on the back section of a 5' x 8' table with two tracks running thru tunnels. I debated over using foam or chicken wire/plaster for the hill/mountain and decided on foam for most of it. I have Woodland Scenics tunnel portals. I think it would be best to create the insides of the tunnels using the chicken wire/plaster method. But I don't know how to attach the chicken wire to the plaster tunnel portal. Does anyone have any ideas on how to do this?