Bethungra Spiral.

The Bethungra Spiral is located almost halfway between Coota' and Junee. Like all railway spirals, it is a loop that enables trains to gain elevation by winding round like a coil spring, negating the need for steep grades. The original line was a steep 2.5% and in the 1940's , when the mainline was duplicated, the 8.9km spiral or "Loop" was built to lessen the grade to a pleasant 1.6%. The loop is unique in the fact that the "Down Main" still uses the original 2.5 % grade and the "Up main" uses the loop and crosses over not just itself, but also goes under and over the down main as well.
From the ground , it is hard to get a picture of the spiral and rough terrain makes catching trains on it a bit of a challenge. These shots are taken on the Eastern side of the deep cutting , just where the second tunnel ends and the line goes over itself.