The Georgetown Sub represents the trackage from Granger to Georgetown
and the Texas Crushed Stone Quarry just North of Austin, Texas. It is in the
middle left of the layout, highlighted in red.
In reality, it
is one of the four points of entry into staging. This allows for GRR rock
trains coming on or going off the modeled portion of the layout from the
Austin area onto the layout. Operationally, this is a must for proper Katy
operations in Texas.