Atomic Systems

http://www.fourthray.com/Peter/Layouts/PCRR3/index.htm

Have a look around - be sure to check out areas 4 and 5 - a huge helix over 130 feet of track in N Gauge. In total he has over 12 scale miles of track

That helix is awesome.
But why did he make it that much lower below the main track (28 inches if my calcs are right).

That layout is amazing.

What a lot of trees there are.

My only guess is that he must have wanted very easy access to the lower level.