@gunrunnerjohn The lights almost look like "black" lights.
@cpowell The bottom level is about 4 feet off the floor. You just lift up a curtain section and crawl into the center. You can stand up inside without a problem.
Also, at the bottom of the helix where a train usually descends there is a long straight away @ 20 feet long. I know that a helix is a very good test for long trains for finding that weak coupler you never knew you had. Watching 15 freight cars cycling faster and faster to the bottom with the loco still gradually ascending to the top is something you don't forget.
