So here is the layout: 3 levels, 5 loops, 1200 inches of track, 24 switches. 1 Atlas turntable and roundhouse on the left.  A raised level on the right for what I’m calling the mining sight.  All the switching and locomotives are DCC controlled using an ESU ECoS 50200 DCC controller. The Loops are: Outer ring: blue, Inner ring: light blue, Roundhouse ring: yellow, Right under the mountain: brown/yellow (tunnels under mining site), Mining site: green.