Here is the map.
There are only a few dependencies and I think all of them are on the DLS.
I have a few hints that might be useful to know when using this.
-Ignore the red and green arrows. They are usually wrong. Just use the target on the switch stand.
-Turn off particle effects (slider under performance settings) Smoke just doesn't look right in a snow globe, and it might cause "global" warming.
-use small engines like some of Ben's lokeys or Curtis's porter. Anything else looks terrible.
-If for some reason you want to use cabin mode on this you are insane.
-I didn't rename it to something more logical, so look for "Xmas bubble" or something like that.