I was quite jealous of the many outdoor snow pictures posted in the chat room, so in December 1999 I created a snow storm down in my basement using rolled cotton from Christmas decorations. I liked it so much that the upper camp is now blanketed by an early fall snow. This time frame is important because the men are not wearing winter clothes. The snow will continue for the entire switchback and well into the area by the connection to Trout Run and the outside world. Most of the track is LGB with a minimum radius of about 30 inches.
Space is a consideration for indoor large scale layouts.
However, I can run my trains year round, and they're big enough that I ll still be able to see them as my eyesight worsens with age. The upper switchback and lower loop can operate independently. This last photo shows my one-spot delivering the water car to Camp Merdoc on the finished part of my layout.