This 2007 video shows many angles of the overhead layout during construction and final operation. It was constructed about 10 feet over the walk ways.
This train display started in 2004 as a challenge to see if we could put a train over one of the main walkways and then go through a 25 foot artificial Christmas tree. The first year of the display.

See the other video:"DCC and DCC-Bitswitch Collision Avoidance System." to see it in operation. Notice the smooth start and stops, no jerking of the trains.

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