| Slider
  A  basic section with a sliding track feature. Other accessories, such as a log mill or a pallet crane, could be incorporated  as well. 
   Switchback  Ridge
  This  segment incorporates tunnels, elevated bridges, and dramatic, craggy  hills. Trains navigate up through the  hills using a series of switchbacks. Retaining walls, piers, snow sheds, and a mine operation can be built  into the terrain. Tunnels are required  on multiple lines and at multiple levels. This requires a lot of creative carpentry with details to be worked out  as they arise. Consideration must also  be given to keeping the module light enough. 
    
    
    
    Reverse  Return
  An  end module that incorporates a switchback. The edge of the module could be a shoreline, harbor, mountain, dam, international  border, cliff, or other feature that represents a logical endpoint. The segment could be oriented 90° and hook to  the left, right, or tee. Grade changes  could be integrated, as well as a small yard, factory, or port. Roundhouse  Junction
  A  segment with a turntable and engine house. Space in a standard module may be too limiting - consider a bulge or  right-angle arrangement that can supports both the turntable and  roundhouse. The turntable could be  easily constructed using an aluminum lazy susan set into the table. Freighthouse  Yard
  This  is a section that can be used to join standard or crossover segments. Using a freightyard as the basic design, the  sidings are configured to align with either segment type at either end. When incorporating this into a table configuration,  4 bumpers are required to terminate the open ends. A rolling crane, pallet docks, and other yard  features integrate well with this arrangement. Intermediate Freightyard
  Typically  trains  pass through, but it does allow trains to shift to a siding to bypass oncoming trains. 
    End Tee
  A turnaround with multiple levels and a return to the main playing area. 
   
    Hammerhead Tee
  A branch mid-segment. 
    Make-up End Yard
  This pair of segments incorporate many elements found in a yard. This could be made as a single segment - but transportating the module would be more difficult. 
    
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